Size: rock bros mountain bike pedals weight 0.83Lbs 380g each pair, the dimension of bicycle platform is 4.09 L *3.94 W *0.79 H inches, 104mm wide platform pedals support the foot more evenly during cycling, provides a more comfortable riding experience for you. Superior smooth bearing: the lubricated sealed du bearing platform pedals feature sturdy and durable, keep pedals spin smooth and without noise. The spindle composite of chrome-molybdenum steel material, carbon fiber bushing outside of the spindle makes it more durable and anti-corrosion. Great grips: anti-skid nails on each side of the mountain bike pedals provide more security on the pedals and effectively prevent your shoes from sliding off, each side of the pedal with 9 stainless steel pins, provide strong grips and we gift extra 3 nails to replace, make the cycling safer, better for riding or racing. Durable & sturdy: the mtb pedal body is made of cnc integration aluminum alloy material, give you a sense of security no matter how tough the terrain. 9 16 Inch standard spindles, suitable for most mountain bikes, mtb, road bikes, commuting bike, urban bikes, bmx bikes, city bikes, etc. Easy to install: using 6mm hexagon installation and removal, the notch on the nut is for the left, the smooth on the nut surface is for the right. Great quality guarantee & lifetime warranty included, we offer you a full money back or replacement with any questions. Customer satisfaction is our highest priority.