IRmm HSS Deburring External Chamfer Tool,High Speed Steel Hex Shank Remove Burr Tools for Drill Bit Fits for Bolts?2 Pack?Silver)

Specification:   Color: Silver Material: HSS (high speed steel) Fits size(approx.):8-32 bolts (.164) up to 3/4?-10 (.750) - (4mm -19mm) Size(approx.):inner ring diameter 22mm/0.87",outer ring diameter 28mm/1.10" Size: specific size as picture shown Interior ring diameter: 22mm Exterior ring diameter: 28mm   Proper Use: This tool works by way of shearing metal layer by layer. Slow speed, along with no unnecessary cutting and the use of cutting oil or another lubricant will bring it long life.   The package includes: 2 x Deburring External Deburring Chamfer Tool