MEETLOCKS Bike Pedal Injection Magnesium Alloy Body Cr-Mo Machined 9/16" Screw thread Spindle Ultra DU/Sealed bearings Magnesium Alloy Injection Body, High Quality Pedals In Weight of 196g / Pc, Much Lighter And Stronger Than Those Other Aluminum Alloy Ones In Market. Concave 4"x4" Platform Shape For A Long Ride, Comfort & Pedaling Efficiency With A Good Skid Resistance Design. Why The Function Is So Smooth? DU Sealed Bearings Keep The Elements Out And Contribute To Long-Lasting, Smooth Rolling Pedals. Market Proven Axle Durability, Replaceable Pins, Offering Stability, Comfort And Good Grips. (2 Pcs)Each Pair Is Packed By A Strong Box; Product Dimensions: 4.92 x 4.13 x 0.87 Inches; 100% Quality Warranty.