M4/M5/M6/M8/M10/M12-M16 Female Thread Seven Star Shaped Head Clamping Nuts Knob 

Handle Material: Bakelite

Nut material: copper or iron core

Advantages 

No.1

Fine material, beautiful and high hardness, no deformation.

No.2

Thread integrity screw mouth deep, uniform force is not easy to strip teeth

No.3

Injection molding process handle bottom arc design, clean, neat and beautiful

NO.4

Glue wood handle with smooth surface, easy to save energy, beautiful and practical.

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