Diameter of the the head is .762 mm too large to fit into the countersink area and provide proper crush engagement with the o-ring. Then you'll likely have a leak and air intrusion in the system, increasing the possibility of injury or death. Stated measurement is compared to the original bleed screws of Shimano XTR BL-M9120. These bleed screws are ALSO part of the 26 pc kit that is VERY vaguely described by not showing or listing every piece that is included in the kit. So, I have to pay for return shipping and suffer a 7% fee.
