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Self Tapping Screws : Asbestos Cement Corrugate Sheet

The Special Tapping Point (T-17) is very helpful to scoop and drill the wood

for more tightly hold and can screw directly without pre-drill ,

with the best quality “DEKS” EPDM rubber washers , no conductivity ,

uv protection , more effective leakage proof.

Wood Frame

Self Tapping