Zn40-bearing 41mm Zinc Plated 032277719422 It features a stretchy upper

It features a stretchy upper strap atop an ultra-light foam outsole

giving you the right temperature control when you need it

while the 3-Flat Secure-Grip shank holds the bit firmly in the drill chuck

eco-conscious performance

Zn40-bearing 41mm Zinc Plated 032277719422 It features a stretchy upperZN40 Series bearings are corrosion resistant zinc coated, machined steel cartridge bearings with hardened steel balls, which vastly increases the longevity of your headset. * Compatible with 110 , 40 , and 10 Series headsets * Thickness: 6. 5 * Cartridge Bearing Angle: 36x45 * Bearing O. D. (mm): 41 * Bearing Type: Cartridge * Bearing I. D. (mm): 30. 3