Ancoraggi a vite per muratura in calcestruzzo 1/4 x 1-3/4" Tapcon testa esagonale punta diamantata (2000)
HEX Head 1/4 x 1-3/4" Concrete Masonry Screw / Anchor, Blue ceramic coating, Tapcon, Diamond point. Picture shown above is example and each length have different amount of threads are on the shaft thread are decreases as length increases.