SPECIFICATIONS: Glass Fiber-reinforced Nylon Composite MTB bike Pedals' effective size is 4.88"L*4.49"W*0.91"THK. Weight is only 0.84 lb/pr. Mountain bike pedals have a Intl 9/16" chrome-molybdenum steel spindle, which is stronger than ordinary steel and better load-bearing performance features. Durable, Shock-proof, Abrasion and Corrosion Resistance. Give you a sense of security and enjoy cycling. WIDE TREAD & GREAT GRIPPY: 4.88 inch large flat pedal fit most shoes' sole. Non-slip pedals with 9 pcs/side replaceable Pins, can grip shoes very securely. Provide more comfortable cycling experience for you. SPIN SMOOTHLY: Sealed Ball Bearing x1 + IGUS DU x1 keep bike pedal spin smoothly. In addition, gasket and rear cover design prevent water,dust,mud or sand entering to the bicycle pedals' spindle. EASY INSTALL: "CR-L" marks on spindle means Left Pedal & "CR-R" means Right Pedal. Biking pedals come w 1pc internal hexagonal wrench, washers and pins that can give a help. NICE PACKING: Flat BMX pedals / pedales para bicicleta packed in a color box, could be a good choice to present cycling lovers as gift. International 9/16" Cr-Mo Spindle/Axle fits most Adult bikes: Hybrid, Old School, Commuter, Dirt Jumper, Folding Bike, Touring, Track Bike, Unicycle, Urban, Clipless pedals Road bike pedals replacement. BOWOD MTB Pedals, Large BMX Pedals with Light Nylon Composite Platform, Bicycle Pedals with 9/16" Cr-Mo Spindle 2Bearings for Road Bike Pedals Replacement, each Bike Pedal has 18Pins Adjustable