Duo-Bit Standard Masonry Drill Bits
The Duo-Bit Masonry Bits feature a high speed steel shank and carbide tips for durability. From drilling concrete to powering through brickwork, these masonry drill bits are excellent for a variety of heavy duty applications! 1/8″ – 1″ in 3″ and 6″ length
- Description
- Selection Chart
Description
- HSS Shank
- Premium quality construction
- Heavy duty carbide tipped
- 1/8″ – 1″ in 3″ and 6″ length









The ThunderTwist’s TriCarb grade tip guarantees longer life with faster penetration due to increased chiseling action. ThunderTwist’s flute design, combined with copper brazing alloy creates the most reliable drill bit on the market. It is made with high quality American chrome-molybdenum nickel steel that is vacuum heat treated, and shot-peened for superior strength under the roughest conditions.










