Concrete Screw 1. M 7.5x42, 52--212 1. DIN,ANSI,JIS,BS,ETC Package: bulk in cartons Concrete ScrewsModel:NEC0509Name: Concrete ScrewSize: 7.5x42 52--212Standard: DIN,ANSI,JIS,BS,ASPackage: Bulk smallMaterial: 1020,1020AFinishing: ZP YZP 1022 Concrete Screws