Insize Non Contact Tachometer 2.5 99999RPM Series 9223 120 Insize Gear Tooth Vernier Caliper Range Series 1281 M26A ✔ Product: 23mm HSS Mini A high quality Morse ✔ Product: 23mm HSS Mini Hole Saw✔ Material: High speed steel (HSS) for superior durability and cutting performance✔ Cutting Geometry: Two layer cutting design for fast drilling with minimal vibration✔ Shank Type: Threaded shank with a special tool holder for secure and easy installation✔ Cutting Depth Adjustment: Clam tail bolts with an internal hexagonal wrench for adjusting cutting depth and spring force✔ Pilot Pin: Sold separately this kit is ideal for use in high temperature applications Measures rotary speed accurately without physical contact Key Features & Benefits