Check the listing for details. Maxhit HDK-0010-S Zero-Stack External Cup Headset Kit with Angular Contact. Color: Gray, Condition: New. Listed at 136.11 USD. Designed to press directly into the head tube, eliminating the need for the aluminum cups that are traditionally used to carry the bearings . This unique design frees-up space for much larger balls that more than double the load capacity compared to standard headset bearings . Kit includes fork crown race and upper split-ring and upper bearing cap . Machined entirely from 440C stainless steel and guaranteed for life, Maxhit headset bearings include proprietary double-lip labyrinth seals and Enduro's extra high pressure grease to ensure a lifetime of trouble-free, heavy duty performanceMaxhit headset bearings are designed to press directly into your bicycles headtube, eliminating the need for the aluminum cups that are traditionally used to carry the bearings. For 1-1/8" x 1-1/2" tapered.