Extend your reach with the 3.25 in. Bit Driver Extender. . Holds standard Leatherman bits and standard hex bits. For use with any Leatherman tool or knife that features a large bit driver. Charge models, Surge, Wave, e306x/e307x, k502x/k503x, h502/h503, Crater and Expanse knives with bit drivers 37447386015 19781400012 931015