Adjustable HSS square hand reamer, metal cutting, hole adjustment range 17-19mm, 6 blades

Applicable materials: A3, alloy steel, steel, cast iron, cast steel, aluminum and other metal materials. A reamer with one or more teeth used to drill holes in the surface of a thin layer of metal on a rotary tool. The exact size and shape can be obtained after reaming. Used to ream (or drill and countersink) the workpiece after the hole is made. It is mainly used to improve the accuracy of hole machining and reduce surface roughness. It is used for finishing and semi-finishing tools for holes. Note: This product is not an original accessory, please note this before purchasing