Introducing the new B-Lok clamp from 81 Customs. The B-Lok clamp differs from other collar clamps available. Whereas your standard clamps are placed over the bars and then tightened, this PAT Pending, fully CNC machined B-Lok clamp is machined inside with a thread. The thread is aligned to your forks and then tightened, then place your bars into the top and slide over the forks inside the clamp. Once tightened there is approximately 60mm of coverage over the bars. Size: 73mm x 48mm x 44mm