FEATURES: milled rim differentiated front-rear rims rear rim with asymmetrical drilling variable section stainless steel aero spokes differentiated spokes ultralinear geometry nut-plate system with ball coupling self-locking nuts rear hub with oversize right-hand flange aluminium hub bodies dynamic balancing cup and cone bearings 4x15 balls 5/32" in Grade 10 stainless steel monolithic FW body new quick-releases oversize light-alloy axles special brake pads Weight: 1380 grams