New 10 piece Stainless Steel Flat Wire Brush Set. They will fit your hand drill, drill press & for Dremel and Foredom tool with a 1/8" (3.175mm) collet. Overall length is 43mm (1 3/4 inch); Shank diameter : 3.17mm (1/8 inch). Wheel diameter : 19mm (3/4 inch); Wheel thickness : 1mm to 1.5mm. | Suitable for removing rust and oxidation. US-BASED CUSTOMER SERVICE: Available by chat, email, phone, or visit us at our customer service center in La Crosse, WI.