The OEM Automotive Tools' Compact Bit Driver Set, No. 25945, has 10 of the most common 1/4” bits. The auto slim-lock bit extension holder features an ultra-narrow profile that allows for access to confined areas where previous traditional bit holders cannot reach. The all-in-one set features an ergonomic case that converts to a driver and stores all components neatly inside. Components included are: Phillips bits: #1, #2 and #3, Slotted bits: 3/16”, 1/4” and 5/16”, Star bits: T15, T20, T25 and T30 and a magnetic extension.