12.4mm HSS 90° Straight Shank Countersink Cutter micrometer set The Carmex SIR 0040 T22 A high quality Morse The Carmex SIR 0040 T22 is a precision engineered internal thread turning toolholder designed for use with 22 mm inserts robust construction accurate countersinks for the smooth seating of fasteners and boltsDeburring & Chamfering: Ideal for lightly deburring holes or chamfering edges to achieve a smooth finishVersatile: Suitable for use in a wide variety of industries and materials 4mm Hi Speed Steel (HSS E) 90° Straight Shank CountersinkMaterial: HSS E (High Speed Steel) for enhanced durability and cutting performanceShank Size: Straight shank for compatibility with standard drill chucksCountersink Angle: 90° for precise countersunk hole creationMulti Material Compatibility: Works perfectly on steel