Reely Steel Pinion Gear 18 Tooth with Grubscrew 0.5M

Reely Steel Pinion Gears - Module 0.5 - Reely 213950, A 18-tooth, module 0.5 steel pinion gear that is secured to the shaft by an M3 grub screw. Reely Steel Pinion Gear 18 Tooth with Grubscrew 0.5M

Price: 2.94 from Rapid Online Rapid Electronics Ltd.