M15 For other type of crank

M20 Suitable for Shimano such as M4000,M590,M596,M661,SLX,XT, etc

M18 suitable for Racework etc

M19 for other type of crank

Dcbikes Product Features :

Material: Aluminium alloy

Size : M15 x 9mm(approx) 

Size : M18 x 9mm(approx) 

Size M19 x 9mm(approx) 

Size : 20mm x 9mm(approx)

Colors : Green/Red/ Blue/Black/Gold/Purple/Pink

⚠️ Note 🌟 Random Brand Logo on bolt 

Package Includes :

1 X New Crank Arm Bolt

Buy M15/M 18/M 19/M 20 Crank Arm Bolt & Accessories From Dcbikes® Online Bike Store www.dcbikes.com.sg | Singapore Favourite Choice For Mountain Bike, Bicycle Parts Components & Accessories Shop