Sizes (mm): 10, 12, 13, 14, 15, 17, 18, 19mm Material: Chrome molybdenum steel Drive size (mm): 9.5 (3/8 inch) Thickness: 3.5～4.5mm Holder sold separately Extremely low price, no discounts available. Will be shipped in simple packaging. Please examine the images and consider before purchasing. Specifications may slightly change depending on the production period. To reduce shipping costs, the cheapest shipping method will be used. Instruction manuals, warranty cards, etc. are not included. Imported goods, please refrain from bidding if you are concerned about minor scratches or dirt. The buyer will be evaluated, but there may be a delay. Thank you for your understanding. Please acknowledge the above contents and proceed with your purchase.