your reach with the Bit Driver Extension tool. into the bit holder on any Leatherman knife or tool and accepts all Leatherman bits, as well as all point of reference 1/4 '' hex bits. The Bit Driver Extender with the mass tools : Charge AL, Charge ALX, Charge Ti, Charge TTi, Charge XTi, MUT, MUT EOD, Skeletool, Skeletool CX, Wave, Surge, extractible Bit Driver, c33B, c33Bx, c55B, c55Bx, e306x, e307x, e33B, e33Bx, e55B, e55Bx, h502, h503, k502x, k503x, primary Surge, Skeletool SX, Crunch and Signal.