Spline Masonry Bits
The ThunderTwist Spline masonry bits have a TriCarb grade tip which guarantees longer life, with faster penetration due to increased chiseling action. The ThunderTwist also has a flute design which, combined with a copper brazing allow, creates the most reliable drill bit on the market.
ThunderTwist bits are made with the highest quality American chrome-molybdenum-nickel steel available. Then they are vacuum heat-treated, and shot-peened for superiors strength under the roughest conditions.
- Additional information
- Description
Additional information
| Size | 3/8″ X 12″ X 6″, 3/8″ X 18″ X 12″, 9/16″ X 23″ X 18 “, 1/2″ X 11″ X 6″, 1/2″ X 18″ X 13″, 1/2″ X 23″ X 18″, 5/8″ X 11″ X 6″, 5/8″ X 16″ X 11″, 5/8″ X 23″ X 18″, 3/4″ X 11″ X 6″, 3/4″ X 16″ X 11″, 3/4″ X 23″ X 18″, 3/4″ X 36″ X 31″, 7/8″ X 18″ X 12″, 7/8″ X 22″ X 16″, 7/8″ X 36″ X 31″, 1-1/8″ X 18″ X 12″, 1-1/8″ X 22″ X 17″, 1-1/4″ X 18″ X 12″, 1-1/4″ X 22″ X 17″, 1-1/4″ X 36″ X 31″, 1-1/2″ X 18″ X 16″, 1-1/2″ X 23″ X 17″, 1″ X 13″ X 8″, 1″ X 18″ X 13″, 1″ X 23″ X 18″, 1″ X 27″ X 22″, 2″ X 23″ X 18” |
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The ThunderTwist Spline masonry bits have a TriCarb grade tip which guarantees longer life, with faster penetration due to increased chiseling action. The ThunderTwist also has a flute design which, combined with a copper brazing allow, creates the most reliable drill bit on the market.
ThunderTwist bits are made with the highest quality American chrome-molybdenum-nickel steel available. Then they are vacuum heat-treated, and shot-peened for superiors strength under the roughest conditions.





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.




Made from S2 modified shock resistant steel for professional performance and durability. Featuring a patented spiral torsion zone absorbs impact and extends bit life. Proprietary precision CNC machined tips for excellent fit in fastener recess. Tested to outperform all leading brands in lifecycle and tip failure testing.





