Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

The Lab Stockroom

Products

Products

The Lab Stockroom

5-Piece Double-Parallel Plastic Pulley Set, 50mm Diameter

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$34.99$36.99

5% off

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shopping designed around you.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Quantity

1

Description

Five-pulley set of double-parallel 50mm plastic pulleys on open-sided steel frames, equipping a class for compound-pulley and multi-rope mechanical-advantage experiments.

Delivery & Returns

The Lab Stockroom

Exclusive offer available

The Lab Stockroom

4.8 (990)

You might also like

14% off

The Lab Stockroom

Advanced Pulley Demonstration Set

(1)

The Lab Stockroom

Multi-Speed Drive Belt Mechanical Demonstration Model

The Lab Stockroom

Double Parallel Pulley with 2" Wheels

The Lab Stockroom

Double Convex Glass Lens, 50mm Diameter

41% off

The Lab Stockroom

Single Plastic Physics Pulley, 1.75" Diameter

15% off

The Lab Stockroom

Stainless Steel Harmonic Motion Spring, 7", 9-9.5 N/m

(1)

The Lab Stockroom

Inclined Plane Kit (No Base) - Visual Scientifics

21% off

The Lab Stockroom

Double-Parallel Plastic Pulley, 50mm Diameter

24% off

The Lab Stockroom

Optically Worked Double Convex Glass Lens, 75mm Diameter, 150mm Focal Length

29% off

The Lab Stockroom

Plano-Convex Glass Lens, 50mm Diameter, 50mm Focal Length

The Lab Stockroom

15" Motion Converter Simple Machine Model

The Lab Stockroom

12-Piece Simple Machines Complete Set

The Lab Stockroom

6-Piece Visual Scientifics Experiment Starter Pack with 5 Component Kits and Magnetic Base, Alternate SKU

The Lab Stockroom

Amphiuma Blood Smear Prepared Microscope Slide

12% off

The Lab Stockroom

Single Pulley with 2 Hooks, Heavy Duty Frame, 4.25 x 2"

The Lab Stockroom

Pulley Demonstration Kit

The Lab Stockroom

Mechanics Systems 1 Physics Kit with 60+ Components for 18 Experiments, Updated Edition

21% off

The Lab Stockroom

Heavy-Duty Steel Retort Stand Set, 3-Piece

The Lab Stockroom

15mm Mini Boss Head Clamp

19% off

The Lab Stockroom

Semicircular Glass Block, 100 x 18mm

21% off

The Lab Stockroom

Suspension Clamp, 110mm from Support Rod

15% off

The Lab Stockroom

18-Piece Equilateral Acrylic Prism Classroom Set (1", 2", 4" Lengths)

22% off

The Lab Stockroom

Closed Retort Ring with Stem, 3" ID, Plated Mild Steel

4% off

The Lab Stockroom

Magnetic Back Board with 4 Screw Mounts - Visual Scientifics

14% off

The Lab Stockroom

5-Piece Low-Friction Tandem Plastic Pulley Set

The Lab Stockroom

Student Pulley Demonstration Set

Arbor Scientific Double Pulley (Painted)

Arbor Scientific

Double Pulley (Painted)

26% off

The Lab Stockroom

Optically Worked Double Convex Glass Lens, 200mm Focal Length, 38mm Diameter

The Lab Stockroom

Raw Hematite Mineral Hand Sample, Approx 3 inch

The Lab Stockroom

Round Convex Glass Mirror, 150mm (6") Diameter, 150mm Focal Length

(1)

The Lab Stockroom

Spherometer for Surface Curvature Measurement

The Lab Stockroom

81-Piece Physics Mechanics Equipment Kit

The Lab Stockroom

Hexagonal Iron Mass with Lifting Ring

10% off

The Lab Stockroom

Simple Machines Pulley Model

The Lab Stockroom

9" High-Speed Low-Friction Spoke Pulley, 2.5" Diameter

The Lab Stockroom

Chrome-Plated Steel Tuning Fork

The Lab Stockroom

Semicircular Acrylic Block with Polished Sides, 3"

The Lab Stockroom

Heavy Duty Rectangular Retort Base and 23.6" Rod Set, 11 x 6"

The Lab Stockroom

Double Concave Glass Lens, 50mm Diameter, 150mm Focal Length

The Lab Stockroom

Rectangular Retort Base and 23.6" Rod Set, 9 x 5.5", 12mm Rod

The Lab Stockroom

Long Stem Receiver Delivery Adapter, 24/29 Socket, 200mm Body, Borosilicate Glass

The Lab Stockroom

Advanced Ripple Tank with Projection Mirror

34% off

The Lab Stockroom

4-Piece Rectangular Retort Stand Set with Coated 3-Prong Clamp

(1)

The Lab Stockroom

Solid Acrylic Cube, 2" Sides

The Lab Stockroom

4-Step Differential Metal Pulley, 20/30/40/60mm

The Lab Stockroom

Heavy Duty Rectangular Steel Retort Base, Pro Series

23% off

The Lab Stockroom

Low-Friction Force Table Pulley Clamp, 2"

The Lab Stockroom

Off-White Unglazed Porcelain Streak Plate for Rock and Specimen Testing

The Lab Stockroom

Rectangular Retort Base - 6"x4" - Steel

The Lab Stockroom

Wide Mouth Borosilicate Glass Reagent Bottle with Penny Stopper

The Lab Stockroom

Circular Copper Coil on Base with 4mm Terminals

The Lab Stockroom

Parallel and Series Circuit Demonstrator

27% off

The Lab Stockroom

32-Piece Laboratory Starter Kit with Glassware and Plasticware

The Lab Stockroom

28-Piece Visible Ray Geometrical Table Top Optics Set

The Lab Stockroom

Medium Pulley with Universal Clamp

The Lab Stockroom

Optically Worked Double Convex Glass Lens, 38mm Diameter

49% off

The Lab Stockroom

Extended Inclined Plane Kit, Alternate Model - Visual Scientifics

The Lab Stockroom

Steel Ball Bearings, 16mm, 10-Pack

29% off

The Lab Stockroom

Borosilicate Glass Siphon Lift Pump

The Lab Stockroom

Magnetic Field Demonstrator with Long Solenoid, Acrylic Frame

21% off

The Lab Stockroom

Optical Lens Set, 2", 6-Piece, Convex and Concave

15% off

The Lab Stockroom

Medium Force Table with 3 Legs and 4 Pulleys, 11.75"

The Lab Stockroom

Standing Wave Demonstrator Kit with Magnetic Base - Visual Scientifics

The Lab Stockroom

Rectangular Retort Base and 29.5" Rod Set, 10 x 6.25", 12mm Rod

26% off

The Lab Stockroom

Optically Worked Double Convex Glass Lens, 150mm Focal Length, 38mm Diameter

The Lab Stockroom

Demonstration Electromagnet, 6V Max

Arbor Scientific Pulley on Rod with Clamp

Arbor Scientific

Pulley on Rod with Clamp

The Lab Stockroom

LED Demonstrator with 4mm Terminals

The Lab Stockroom

Human Circulatory System Model, Hand-Painted

The Lab Stockroom

Orange Soft Rubber Tubing, 5mm Bore, 10m Roll

The Lab Stockroom

Chrome Steel Bar Magnet Pair, Red/Blue, 150 x 12 x 5mm

21% off

The Lab Stockroom

8-Piece Premium Stainless Steel Slotted Mass Set

(1)

17% off

The Lab Stockroom

Wooden Buret Rack with 12-Buret Capacity

9% off

The Lab Stockroom

5-Piece Low-Friction Single Plastic Pulley Set, 50mm Diameter

29% off

The Lab Stockroom

Unglazed Porcelain Streak Plate, 12-Pack

The Lab Stockroom

Mechanics Systems 2 Physics Kit for 14 Experiments with Guides, Carry Case

17% off

The Lab Stockroom

4-Metal Density Block Set, 2 x 0.5"

The Lab Stockroom

Cone Clutch Drive Mechanical Demonstration Set

The Lab Stockroom

Universal Steel Clamp with Holder, Flat and V-Shaped Jaws

23% off

The Lab Stockroom

Rectangular Refraction Glass Block, 75 x 50 x 18mm

The Lab Stockroom

Ceramic Rectangular Magnet, 1.5 x 1 x 0.4"

The Lab Stockroom

Magnetics Systems Physics Kit with 18 Components and 7 Experiment Guides, Carry Case

25% off

The Lab Stockroom

Optically Worked Double Convex Glass Lens, 75mm Diameter, 1000mm Focal Length

(1)

9% off

The Lab Stockroom

5-Piece Single Plastic Pulley Set, 50mm Diameter

3% off

The Lab Stockroom

6-Piece Parallel Plastic Pulley Set, 50mm Diameter

The Lab Stockroom

Scientific Steel Tuning Fork Set, 8 Forks in Wooden Case

The Lab Stockroom

Simple Machines Pendulum Model

13% off

The Lab Stockroom

Triple-Parallel Plastic Pulley, 50mm Diameter

10% off

The Lab Stockroom

6-Piece Drilled Ball Set in Plastic Case

The Lab Stockroom

Plano-Convex Glass Lens, 50mm Diameter, 200mm Focal Length