The top of the center knobs consist of a medium durometer compound to provide traction and durability without sacrificing rolling efficiency

Wheels Mfg axles are made from aircraft quality 4130 alloy steel

Compatible with all tubeless road

Includes stainless steel lockring

light action

SHIMANO S-Phyre Merino Socks - Unisex salsapromo The top of the centerSystem engineered to perform in tandem with S PHYRE shoes, SHIMANO S Phyre Merino Socks keep your feet warm, dry and comfortable any time of year. The construction of 60% Australian extra fine Merino wool offers natural softness, warmth and moisture management, while the reinforced ribbing provides arch support and additional heel stability. Extra fine merino wool cycling socks provide year round comfort, helping keep your focus on the road ahead