BC1 (V1.1, Mini V1) Silicon Foot Insert (4pcs)

Own 3 OBT. Nothing else compares to it. Nothing on the market even comes close. You need wider exposure. I've made over a half a dozen builds on these and sold them all immediately. And one of the main selling points was the OBT. Don't stop making! They're brilliant design and engineering; they're art, they're perfect.