Upgraded Stainless Steel Trailer Jack Electric Drill Adapter With A 1/2 In ?Fit for?: This trailer jack drill adapter kit only fits for 1 inch jack drive shaft. ?Upgraded Stainless Steel?: Our trailer jack electric drill adapter and socket adapter bit are made of high quality stainless steel, which has excellent wear resistance and corrosion resistance. Compared with aluminum alloy, stainless steel has higher hardness, is not easy to deform, and is more robust and durable. ?Specification?: The shaft hole of this trailer jack drill adapter is 26 mm (1 Inch). It comes with a 1/2 in drive socket adapter. ?Easy to Use?: This trailer jack drill adapter is manufactured to meet specifications for fit, form and function. Put it directly on the 1 inch jack drive shaft and secure it, then drive it with an electric drill. You can also drive it with a 1/2 in ratchet or a brake bar. It is fast and convenient, saving both time and energy. ?Package Included?: 1 Trailer Jack Electric Drill Adapter, 1 Axis Pin, 1 R-type Pin, 1 Electric Drill Bit.