Robinson Racing Steel 48P Pinion Gear (3.17mm Bore) (19T)
The 48 Pitch Hard Nickel Plated Alloy Steel Pinions are precision cut gears that last and last when used with a plastic spur gear. Pinions are stamped with tooth number. 1/8 inch bore. One 5-40 set screw included. 1/16 inch allen wrench (not included) fits the 5/40 set screw.