Tekno RC "M5" Hardened Steel 5mm Bore Mod 1 Pinion Gear. Tekno RC M5 Pinion Gears stand out from the rest. These are the ultimate pinions for 1/8th Electric and any other MOD1 pinion application.  The M5 set screw ensures that your gear will stay put during operation and ensure you won't strip it out when you need to remove it. The gears are CNC machined and lightened, then hardened for incredible durability and laser etched for easy identification.

Features:

• Massive M5 set screw grips better and won't strip out
• Precisely machined and lightened for quiet and efficient operation
• Laser etched for easy identification
• Hardened steel construction
• MOD1 pitch, 5mm bore, standard length shank