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Quantity
1
Description
Overlock knife/blade compatible across the modern overlock family (JACK E4S/E5/C-series, Speedway SW6/SW7, and equivalents). Knives cross thread counts within the family.
The Lower Looper (Part #20717006) is a genuine JACK original replacement part designed for JACK E4S-3 and E4S-5 series overlock machines. Manufactured to OEM specificati...