This drive bit adapter set includes 6 different sizes reducers, it is made of chrome-vanadium steel material and provides strength and strong durability, these tools can be widely used with your wrenches, pliers in your home, car repairs store, factory, etc. Features: Drive Bit Adapter Set: This set includes a 1/4inch to 3/8inch adapter, a 3/8inch to 1/4inch adapter, a 1/2inch to 3/8inch adapter, a 3/8inch to 1/2inch adapter, a 3/4inch to 1/2inch reducer,1/2inch to 3/4inch adapter, different size for your different needs. Preferred Material: These adapters is made of chrome-vanadium steel material, superior wear and corrosion resistant, not easy to rust and can provide a long service time. Storage Box: Comes with a storage box to store these adapters neatly in the box and will not cause confusion or loss. After each use, you just need to put them back in their position. The built-in spring-loaded detent ball on each adapter that locks securely into the socket, giving you a safer using experience. Wide Application: This tool can be used with your with your wrenches, pliers in your your home, car repairs store, factory, etc. Specifications: Material: chrome-vanadium steel Quantity: 6Pcs Item length: 1/4inch to 3/8inch: 26mm / 1.0in 3/8inch to 1/2inch: 37mm / 1.5in 1/2inch to 3/4inch: 49mm / 2.0in 3/4inch to 1/2inch: 56mm / 2.2in Item weight: 3/4inch to 1/2inch: 198g / 7.0ounce 1/2inch to 3/4inch: 133g / 4.7ounce 1/4inch to 3/8inch: 19g / 0.7ounce 3/8inch to 1/4inch: 18g / 0.6ounce 1/2inch to 3/8inch: 47g / 1.7ounce 3/8inch to 1/2inch: 41g / 1.4ounce Package size: 150 * 90 * 50mm / 5.9 * 3.5 * 2.0in Package weight: 572g / 1.3lb Packing List: 6 * Adapters 1 * Storage Box