ITEM NAME:5pcs Flutes Hand Reamers Set H8 Chucking Straight Shank Hand Reamers Set 4m B8Y9 5pcs Flutes Hand Reamers Set H8 Chucking Straight Shank Hand Reamers Set 4m B8Y9 6 flutes, straight shank, alloy tool steel. installed in the lathe for cutting metal tools. Straight flute hand reamers has been used in ferrous metals and most non-ferrous metals. The reamers is precision ground with straight flutes to produce smooth, accurate holes while delivering long tool life. more spacious for reaming holes are drilled after processing (or reaming) on ??the workpiece, mainly improving the precision of the hole, reducing its surface roughness, finishing and semi-finishing tool for the hole. colour:Silver gray Material:HSS size:4/5/6/8/10mm Package Contents: 5*Hand Reamer