Dear customer,Welcome to our store.The quality of our products is guaranteed and the price is favorable, please rest assured to buy!Regarding product information, it is recommended that you check the product details first. If you have any questions, please consult our customer service. 【Product Details】：3pcs/set 1/4 3/8 1/2 Hex Shank Drive Power Drill Bit Wrench Sleeve Extension Socket Driver Adapter Specifications: Ideal for DIY, home and general building/engineering using. Type: Drill Bit Set Color:Silver Material: Chrome vanadium steel Length:5mm. 1/4\'\'*1/4\'\'*67mm--1/4\'\' shank can be converted into 6.35 mm square 3/8\'\'*1/4\'\'*65mm--1/4\'\' shank can be converted into 9.5mm square 1/2\'\'*1/4\'\'*73mm--1/4\'\' shank can be converted into 12.7 mm square 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: 3 pcs/set Shank Drill Bits Household Tools Faucets I wish you a happy life and a happy shopping!