Size Insuitable formation: The overall size of the deburring tool is 2.9 x 6.6 x 0.63cm/1.14 x 2.60 x 0.25inch; the inner diameter is 2.3cm/0.91 inch. With a 1/4 inch; (6.35mm) quick-change hex shank. Product Materials: The deburring chamfer tool is made of cemented carbides suitable for durability and reliability, not easy to break or desuitable form, practical and convenient. You can use them without any worry. Easy to Operate: Find out the bolts with burrs, and use our deburring tool to remove the burr, then you will get a smooth and burr-free bolt, bringing you with a good using experience. Practicality: Our hex shank deburring tool is an perfect option suitable for deburr stainless steel, wood, copper, aluminum, plastic and so on. Specification: Main Color: black Material: ABS+metal Product Size: 2.9 x 6.6 x 0.63cm/1.14 x 2.60 x 0.25inch Package Contents: 2 x Deburring External Chamfer Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.