DRILLCO - #1 HSS MULTI-STEP REAMER, 5/16" - 9/16" - 470SE001

Multi-step reamers feature 3-flat shanks to reduce slippage in the chuck. Reamers are made from M2 HSS. Black oxide surface treatment increases wear resistance. Feature a 118 special drill point for ease of penetration. 5 sizes with 1 tool.
Made with premium grade HSS to last longer
Stepped geometry for fast hole making and enlarging
3/8" reduced shank with 3 flats to reduce slippage in drill chucks
Black oxide surface treatment increases wear resistance