Size information: the total size of the deburring tool is 2.7 x 6.5 x 0.5 cm/1.14 x 2.60 x 0.25 inches; the inner diameter is 2.2 cm/0.91 inches. With 1/4 inch; (6.35 mm) quick change hex shank. Product Materials The chamfer deburring tool is made of cemented carbides for durability and reliability, not easy to break or deform, practical and convenient. You can use them without worries. Easy to operate: find the bolts with burrs and use our deburring tool to remove the burrs, then you will get a smooth and burr-free bolt, bringing you a good using experience. Practicality: Our deburring tool with hex shank is a choice for deburring stainless steel, wood, copper, aluminum, plastic, etc., Manufacturer: Bumdenuu