* HARDENED STEEL * 38T FOR 5MM SHAFT MOTORS
 
5mm Bore
M5 Grub Screws Used with a 2.5 Allen Wrench
Comes With Lock Tight Pre Threaded
Strong and durable Hardened Steel 
Two set-screw holes for extra secure fitting
 
Includes:
1 Pinion
2 Grub Screws