- Patent MS head makes the surface of the material flush and clean.
- Patent Twister thread with high holding power is supposed to strengthen material connection and enhance construction safety.
- Milling the wood and larger hole to lower splitting force by special U thread design.
- The bending angel stands min. 45 degree offer flexibility and impressive deformation resistance to against temperature or environment variation.
1. 專利MS螺旋頭: 完美沉頭表現，表面乾淨無毛邊。
2. 專利Twister反螺旋齒: 高拉拔力+低旋入扭力，大幅提高施工效率。