Features: The Tackpro Pen Mill Set is providing the perfect solution for squaring pen blank and pilot shafts to ensure gapfree mating surfaces for pen kit parts. Made from high-quality stainless steel, this 7-piece set includes3/4inch cutting head, 7mm, 8mm, 3/8inch, and 10mm pilot cutter shafts, as well as an adaptor sleeve and hex key wrench for easy use. This pen barrel trimming system for anyone who loves woodwork and wants to create beautifulpens. Use it with a drill press, hand drill, or your own shop-made handle to achieve accurate and precise results making it perfect for hobbyists and professionals alike. The pen barrel trimming is made of the upgraded stainless steel material. Specifications: Item:Pen Barrel Trimmer Set Material: stainless Steel Quantity: 1Set/7pc Size：As Pictures Includes：3/4inch Cutting Head/ 7mm, 8mm, 3/8inch, 10mm Pilot Cutter Shafts/ Adaptor Sleeve / Hex Key Wrench Package Includes: 1Set Pen Barrel Trimmer Set note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you