The whole product is made of plastic and steel
Fit MTB/Mountain Bike
Fit BB 118-122mm
SPECIFICATIONS
Teeth 48-38-28T
Speeds 6-7-8S/18-21-24
Chain Center Line 47.5mm
Crank Length 170mm
Color Matte Black
Weight 885g
Specifications of Mountain Bike Crangk 3x Set For 6/7/8 Speeds 48-38-28T 170mm
MTB Steel Hand Bike Accessories Mountain Bike Part