HDK-0022-S - Maxhit Zero-Stack/External Cup Headset Kit 1-1/8 x 1-1/2 (44/44mm)-Silver TH-873 The Enduro line of bearings

The Enduro line of bearings are available in high-carbon chromium steel

Grade 25 would be considered a very high grade ball

Radial Suspension Bearing - 30mm x 42mm x 7mm -

For bottom bracket bearing removal and installation:

Static load -506lbf / 2

HDK-0022-S - Maxhit Zero-Stack/External Cup Headset Kit 1-1/8 x 1-1/2 (44/44mm)-Silver TH-873 The Enduro line of bearingsHDK 0022 S 1 1 8 x 1 1 2 stainless steel, Angular Contact, Zero Stack External Cup Headset Bearing Kit for 44mm 44mm ID head tube framesets Silver All Enduro Maxhit headsets are designed with a 36 inner race chamfer angle, along with a matching 36 upper compression ring and 36 lower crown race. When installed as a complete system, angle differences from your original equipment will not affect functionality as long as all included components are used