The cylindrical head features appealing invisible appearance while drilling and easily countersunk even prevent splitting on wood.
- Patent Twister thread with high holding power is supposed to strengthen material connection and enhance construction safety.
- Patent Hex-star recess shows well-fit and stable, the most importance is preventing cam-out effort.
- The bending angel stands min. 45 degree offer flexibility and impressive deformation resistance to against temperature or environment variation.
- Sharp point with type 17 helps quick and easy drilling performance.
What's advantage of Cylindrical head with patent Twister thread?
1. Appealing invisible installation and avoid wood splitting used on near of timber edges.
2. Patent Twister Thread: High holding power strengthen material connection, features construction safety.
3. Save more the battery of the power driver.