1. Made of high strength -Mo steel with high hardness, these lug nut removal sockets are more sturdy and .2. This is 14 pieces nut remover set that can be used with 3/8inch square drive wrench, ratchet, or breaker bar for removing damaged, freeze, rusted, rounded-off bolts, nuts & screws.3. Standard 3/8-inch drive and 1/4-inch hex drive to 3/8-inch drive adapter to let the extractors compatible with common or heavy-duty power tools, drivers and screwdrivers handle tools.4. The 6-point spiral socket design allows a secure connection to the rounded-off fastener to be extracted.5. These Locking Wheel Lug Nut Removal Tools fit hex heads sized 6.35mm(1/4inch), 8mm(5/16inch), 9.5mm(3/8inch), 10mm, 11mm(7/16inch), 12mm, 12.7mm(1/2inch), 13mm, 14mm(9/16inch), 16mm(5/8inch), 17mm, 17.5mm(11/16inch), 19mm(3/4inch) to quickly replace rusting, rounded, or stripped lug nuts and bolts.Colour:BlackMaterial:steelPackage Contents:13 x Nut & Bolt Extractors1 x Socket Adapter BarOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.