11/16-24 Bushmaster Tank Brake. Choose black or stainless finish.
Three slots on each side. Six small ports in the top. No ports on the bottom. Install with crush washer or shims – not included.
Note: Use a 5/16″ round rod inserted through the ports (side to side) in order to tighten the brake. DO NOT use the flats on the brake to tighten it.
Crush washer sold separately.