The polished chrome treatment makes it very easy to wipe clean. Exquisite and high-quality workmanship makes it highly resistant to corrosion. High hardness and wear resistance make it can be used for a long time. The wide range of applications makes it very reliable and practical. Made of chrome vanadium steel material, it is very durable to use. There are six specifications for you to choose from: 1/2 Hole To 3/8 Head, 3/8 Hole To 1/2 Head, 3/8 Hole To 1/4 Head, 1/4 Hole To 3/8 Head, 1/2 Hole To 1/4 Head, 1/4 Hole To 1/2 Head. This product allows you to mix and match driver sizes for sleeves, ratchet handles, extension rods and other accessories. Item Name: Ratchet Wrench Adapter Material: Chrome Vanadium Steel Color: Silver Color Features: Corrosion-resistant, High Hardness, Easy to Clean 1: 1/2 Hole To 3/8 Head 2: 3/8 Hole To 1/2 Head 3: 3/8 Hole To 1/4 Head 4: 1/4 Hole To 3/8 Head 5: 1/2 Hole To 1/4 Head 6: 1/4 Hole To 1/2 Head Size Details: 1: Length: 3.4cm(Approx.) 2: Length: 3.5cm(Approx.) 3: Length: 2.5cm(Approx.) 4: Length: 2.5cm(Approx.) 5: Length: 3.3cm(Approx.) 6: Length: 4.6cm(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Ratchet Wrench Adapter