Two impact tools in one: use as a wobble extension bar when an offset clearance is needed or use as a regular rigid extension bar. Wobble feature lets you reach and turn fasteners that can only be reached at an angle up to 15 degrees spring-loaded ball detent holds sockets securely in place. Premium Chrome Molybdenum steel tempered with our proprietary heat treatment process to withstand more torque from power tools. Expertly coated with manganese phosphate. the preferred coating in military and aerospace. which offers superior protection and corrosion resistance compared to black oxide coating on other impact tools. Three 3/8 in. drive wobble impact extension bars: 3. 6 and 12 in. long. The Capri Tools 3/8 in. Drive Wobble Impact Extension Bar is two tools in one. It can be used as a wobble extension bar when an offset clearance is needed or as a regular rigid extension bar. The wobble feature enables you to reach and turn fasteners that are obstructed and can only be reached at an angle. It allows up to 15 degrees offset. Spring-loaded ball detent holds sockets securely in place. When fully inserted (not at an angle). the extension bar locks into a regular rigid extension bar. These extension bars are constructed of premium Chrome Molybdenum steel tempered with our proprietary heat treatment process to withstand more torque from power tools. Expertly coated with manganese phosphate. the preferred coating in military and aerospace. which offers superior protection and corrosion resistance compared to black oxide coating on other impact tools. Three 3/8 in. drive wobble impact extension bars are included in the set: 3. 6 and 12 in. long.Two impact tools in one: use as a wobble extension bar when an offset clearance is needed or use as a regular rigid extension bar.Wobble feature lets you reach and turn fasteners that can only be reached at an angle up to 15 degrees spring-loaded ball detent holds sockets securely in place.Premium Chrome Molybdenum steel tempered with our proprietary heat treatment process to withstand more torque from power tools.Expertly coated with manganese phosphate. the preferred coating in military and aerospace. which offers superior protection and corrosion resistance compared to black oxide coating on other impact tools.Three 3/8 in. drive wobble impact extension bars: 3. 6 and 12 in. long