Spool Roller

thingiverse

The inner holes enable mounting of the rollers at a right angle to the x-axis, while the outer holes facilitate parallel alignment with the x-axis. The bearings employed measure 20mm in length, 7mm in width, and 8mm in height. Four bolts, cut down from ANSI #4-40, are used for roller attachment. Unfortunately, specifications for the u-bolts remain unclear. 1x Track Mount 4x Roller Mount 4x Track Pin