DiMarzio® ClipLock® Quick Release strap system is the most secure and unique fastening method available. The cornerstone of the ClipLock® strap is the heavy-duty acetal clip that allows you to change it easily from guitar to guitar with a little fingertip pressure, yet has enough holding power to meet military specifications.The ClipLock® fastens permanently between your guitar body and strap buttons with two sturdy brass bushings and extra-long screws (included). DiMarzio® ClipLock® straps adjust in length from 43 to 63 inches (110-160 cm), measured between the strap buttons.