Sta-Tru Silver Silver Alloy 6-7 Speed Freewheel Hub Rear Wheel (24X1.5-Inch) Made using the highest quality materials Tested for durability Used by exper riders worldwide STW ST1 26.5mm wide alloy rims with 36 holes for strength and durability Rear alloy hub uses a 6-8 Spd FW ATB hub matches popular bike spec Alloy wheels use 14G UCP spokes with 5/8" brass nipples