(Zinc Plated Steel). : M4.2 32MM?. Modified Truss Head. Standard Modified Truss Heads are manufactured with precision technology. Multiple length options. M4.2 13/16/19/25/32/38/45/50MM. The Self Drilling Screws are made of outstanding carbon steel material with high strength, which is corrosion-resistant, durable, sturdy, does not deform, and is not easy to break.
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