Features:1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Made of HSS material, adjustable range.4.Fit for A3 steel, alloy steel, cast iron, cast steel, aluminum and other metal materials, etc.5.Functions:The reamer has one or more cutting tool teeth, which are used to remove the rotating tool that has been machined to the thin metal layer of the surface. The precise size and shape can be obtained after the hole is machined through the reamer.6.Applications:reamers to ream the workpiece has been drilling (or bearizing)after processing, mainly to improve the machining precision of hole, reduce its surface roughness, used for finishing and semi-finishing of cutting tool hole.Specification:Color:Silver and BlackReamer Material: HSSAdjustment range: 19-21mmDimension:180 x 19mm/7.09 x 0.75 inch(L x Dia)Weight:246gPackage Include:1x Hand Reamer Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.