Features / Benefits
【20PCS SAE and Metric】10 PCS inch：5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2; 10pcs metric：10PCS Metric: 4mm,5 mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm.
【Wear Resistance Material】The material is forged from high-hardness chrome vanadium steel, with high hardness and high torque after overall high-temperature quenching and heat treatment. And the surface also has undergone corrosion-resistant sandblasting.
【1/4 \"Hex Shank】 The sleeve uses a universal 1/4 \"hex shank for a variety of quick-change chucks, various flashlights, and screwdrivers.
【Easy to Carry in Your Pocket】Assembled by two convenient plastic strips, it is very easy to carry and store, you could even put it into your pocket.
【Wide Application】 They are very suitable for any electric drill, screwdriver, impact drill, 3D printer, suitable for small residential projects and mechanical maintenance.