1INCREASED WEAR AND CORROSION RESISTANCE: 9SiCr has increased wear resistance and corrosion resistance, not easy to deform, and has a long service life 2FOR REPAIR WORK: The reamer can be manually operated with a wrench for light cutting, repair work, destocking or just for expanding the hole 3OF SHARPNESS CUTTING: Large number of teeth, possess high strength, of sharpness cutting, high processing efficiency, stable work with good orientation 43/8IN DIAMETER: The diameter of the reamer is 3/8in, the number of flutes are 6, and the total number is 10pcs, which is enough for you to replace and use 5ACCURATE REAMING: Suitable for accurate reaming of aluminum, cast iron, copper, magnesium alloy, plastic, wood, etc. Item Type: Hand Reamer Material: 9SiCr Diameter: 3/8in Length: Approx. 115mm / 4.53in(there is a 2mm error in manual measurement) Number of Flutes: 6 Flutes Flute Length: Approx. 59mm / 2.32in Product Quantity: 10Pcs Scope of Application: Used for accurate reaming of aluminum, cast iron, copper, magnesium alloy, plastic, wood, etc. 10 x Hand Reamer