FIFTY-FIFTY DH17 Mountain Bike Flat Pedals Material:6061 T6 Aluminium Alloy Body w/ Cro-Moly Axle Size: 105 x 102 x 17mm,17mm thickness Weight:342g/pair The DH17 Pedals using IGUS Plastic bushings to aviod damage to the axle The axle system using 3 o-rings and a graphite nylon spacer to ensure waterproof and dustproof