HDC-0011 - 36x1.5" Sealed AL Crown Race The threaded interface where our

The threaded interface where our collets attach to the BRT-222 utilizes a British Standard Whitworth (BSW) 1/2"-12 thread specification

and installation:

440C stainless steel balls and races to provide long life and superior corrosion resistance in applications and environments that may be less than ideal

29 and 30mm inner guide inserts or a universal insert

Though it is slightly softer than our standard 52100 chromium steel used in most of our bearings

HDC-0011 - 36x1.5" Sealed AL Crown Race The threaded interface where ourHDC 0011 Standard Profile 36x1. 5" Sealed AL Crown Race Medium stack (2. 85mm) 1. 5 inch aluminum fork crown race for 36 inner chamfer headset bearings, like ACB 6808, featuring an NBR seal.