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Success: You have added Irwin 10234CBSM 3/16" - 7/8" #4 Step Drill Bit to your shopping cart!
This unibit cobalt step drill bit is made of high speed steel. This step drill bit will last longer in the toughest of materials.
![Irwin 10234CBSM 3/16" - 7/8" #4 Step Drill Bit](https://cdn.shopify.com/s/files/1/0717/0159/4403/files/Irwin-10234CBSM_01.jpg?v=1727984578 "Irwin 10234CBSM 3/16" - 7/8" #4 Step Drill Bit")
