Hot Racing 21T, 0.6 module (~42P) steel pinion gear for 5mm or 1/8in motor shafts.
Features:
CNC machined steel with black Nitride finishHeavy duty 4mm set screwLong design for maximum motor shaft contactLaser marked tooth countIncludes a 5mm-1/8in shaft adapter to accommodate both 5mm and 1/8in motor shaftsSpecifications:
Teeth: 21Pitch: 0.6 module (~42P)Length: 10.5mmOutside diameter: 13.8mmTooth face width: 5mm