For anyone who has ever assembled a staircase, the time saving benefits alone will amaze you! The new Open Channel diecast housing allows the user to drop the housing over the shaft for easy thread engagement even if the accommodating hole is bored too deep, once engaged using a hex bit with power or an Allen key it is easy to tension the Railbolt. The UT Railbolt is perfect for joining handrail to fittings and handrail to newel posts as well as general woodworking applications. ( Also see 40.520 7mm Deep Socket Tool for screw shaft installation)