Features 1、【IMPACT ADAPTER SET】 This impact adapter reducer set has a specific impact grade design that is made exclusively for drivers, wrenches, and ratchets to convert size up or down for your automotive needs in the garage. Square drive converter. 2、【MULTI- SPECIFICATION SET】 Our socket adapter set includes: reducer- 1/2"F to 3/8"M, 3/8"F to 1/4" M; adapter- 3/8"F to 1/2"M, 1/2"F to 3/4"M, 1/4"F to 3/8"M. Each product has labeled slot and clear laser marking on surface for easy identification and manage. 3、【CHROME VANADIUM ALLOY STEEL】This socket adapter set is constructed of heavy duty drop forged and heat-treated chrome vanadium alloy steel for superior strength and durability to exceed and endure in all work conditions. 4、【SRING BALL DETENT】 This impact adapter set is equipped with spring ball detent, which can tightly connect with socket. And the pin hole is placed on the bottom to connect the spring ball detent of wrench. Reinforced at both ends, no need to worry about falling or loosening problems, safe and efficient. 5、【WIDE APPLICATION】 Impact adapter set solves the problem of size conversion of tools, enables to work on nuts or bolts of various sizes. The complete drive size makes it suitable for most tools and brand, like power impact wrench, cordless impact gun, socket set and more impact tools. Specification Color: Red Quantity: 5Pcs Type: A: 3/4 to 1/2 B: 1/2 to 3/8(fly large to fly medium) C: 3/8 to 1/2(medium to large flight) D: 3/8 to 1/4(fly medium to fly small) E: 1/4 to 3/8(small to medium flight) Material: Chrome vanadium alloy steel Item Size: Type A: 4.9 * 2.6 cm / 1.92 * 1.02 inch Type B: 3.7 * 1.8 cm / 1.45 * 0.7 inch Type C: 3.8 * 2.2 cm / 1.49 * 0.86 inch Type D: 2.5 * 1.4 cm / 0.98 * 0.55 inch Type E: 2.7 * 1.7 cm / 1.06 * 0.66 inch Package Size: 15.5 * 13.5 * 3.5 cm / 6.1 * 5.31 * 1.38 inch Package Weight: 330g / 11.64oz Package List 5 * Socket Adapter