Feature: 1. 1. Adapter Set: Our adapter set includes 1/4\"(F) to 3/8\"(M), 3/8\"(F) to 1/4\"(M), 3/8\"(F) to 1/2\"(M), 1/2\"(F) to 3/8\"(M). 2. 2. Steel Material: Sockets are made of steel material that will pass the test of time. 3. 3. Spring-loaded Design: The spring-loaded ball system will prevent dropping while the through-hole in the drive end will securely lock the adapter. 4. 4. Rustproof Coating: With rustproof coating on the surface, it can reduce rust corrosion and effectively prolong service life. 5. 5. Impact Grade Design: The universal adapters compatible with cordless drills or impact tools. Specification: The socket adapter can help you finish job faster and save your time, which is suitable for automotive repair, home maintenance or DIY projects. Features: 1. Adapter Set: Our adapter set includes 1/4"(F) to 3/8"(M), 3/8"(F) to 1/4"(M), 3/8"(F) to 1/2"(M), 1/2"(F) to 3/8"(M). 2. Steel Material: Sockets are made of steel material that will pass the test of time. 3. Spring-loaded Design: The spring-loaded ball system will prevent dropping while the through-hole in the drive end will securely lock the adapter. 4. Rustproof Coating: With rustproof coating on the surface, it can reduce rust corrosion and effectively prolong service life. 5. Impact Grade Design: The universal adapters compatible with cordless drills or impact tools. Note: 1. Due to manual measurement, the size may be slightly different. Thank you for your understanding. 2. Due to different light conditions and different monitors, item color displayed in photos may be showing slightly different from real object. Specifications: Color: Black Material: Steel Packing Size: 8*6*2cm / 3.15*2.36*0.79in Net Weight: 130g / 4.59oz Gross Weight: 130g / 4.59oz Type Height Diameter 3/8"(F) to 1/4"(M) 26mm / 1.02in 16mm / 0.63in 1/4"(F) to 3/8"(M) 27mm / 1.06in 13mm / 0.51in 1/2"(F) to 3/8"(M) 36mm / 1.41in 22mm / 0.87in 3/8"(F) to 1/2"(M) 35mm / 1.38in 18mm / 0.71in Package List: 4 * Socket Adapter Package List: 4 * Socket Adapter