Composition: Inside material can be Iron/Brass/Zinc alloy. Outside coated with 100% French nylon powder
Characteristic:
–   Metal material with nice looking and good hardness
–   Various inside material for choice, iron material low cost,magnetic,most popular,good-hardness.
Inside material Brass /Zinc alloy non-magnetic, good hardness, can pass needle test.
–   Low cost to develop new designs. Various size for choice from 4mm-35mm.
–   Color: Can be dyed to any solid color with good color-fastness.