DURABLE: Extra durable heavy duty body: forged 6066 aluminum. Axle: 9/16" precisely CNC machined Cr-Mo Indoordle. Size: 80 x 60 mm = 3.15 x 2.36 inch.<br/>SMOOTH BEARINGS: LSL bushing & sealed. Very smooth and reliable. Axle: 9/16" CNC machined Cr-Mo. Double sided clipless, Cleat: Compatible with Shimano SPD type cleats SC-C01F (single release) included. <br/>SUPER LIGHT: With its durability and reliability, the pedals are super light. Weight: 290g = 0.64lbs/pair (without cleats) which is 45% lighter than XTR pedals around 469g. <br/>ADJUSTABLE TENSION: Tension adjustable (80~140kgf.cm) .The cleats tension could be adjusted by the screw on the side of the pedal. It allows riders to achieve perfect clip in and out feelings.<br/>