1/4 3/8 1/2 Size Flexible Electric Drill Wrench Sleeve Socket Bendable Flexible Hose Shaft Universal Link Extension BlackFeature:1.360° free rotation, suitable for narrow spaces at different angles2. It can be used with ratchet wrench, square interface wrench or electric drill3. Square interface, with anti-convulsant ball4. Spring technology, can be bent and used, and the support is stronger Specification: Size interface diameter interface clamp diameter overall length Large 1/2" 1/2" 21mm/0.83in 245mm/9.65in Medium 3/8" 3/8" 16mm/0.63in 197mm/7.76in Small 1/4" 1/4" 11mm/0.43in 145mm/5.71in Material: MetalNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Please allow 1-2cm measurement deviation due to manual measurement.1 * Wrench Slot