Description About this item 1/4 inch Hex Shank Adapters Material: Carbon Steel + CRV, 3 Sizes: 60mm, 100mm, 150mm Shank shape: hexagonal shank Applicable to use in electric screwdriver, impact wrenches, shank extensions that they stay securely in place in the screwdriver If you have any questions, concerns, or need further information, please feel free to anytime. Our team is dedicated to providing you with support and answering any inquiries you may have. Your satisfaction is our ultimate goal. We look forward to offering you top-quality products and service! Thank you for your support.Note: 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.