Teeth: 30T 32T 34T 36T 38T 40T 42T 44T 46T 48T 50T. Crank Length: 170mm. Crank Shaft Length: CLAW-100 176mm/ CLAW-120 196mm. Compatible: Snow Bike/ Fat Bike. PW-BB100+ / PW-BB120+ Bottom Bracket. Material: 30T AL7075, other size is Alloy.
eBay