Cut nails are also know as Steel cut nails. Steel cut nails are widely used for attaching wood to cinder blocks, mortar joints, brick walls, and fresh concrete. Length 25.4mm 50.8mm 76.2mm 101.6mm Diameter 4D 6D 10D 20D Finish Polished/Galvanized/Hot Dipped If you have any questions please contact Mingzong Hardware Sales Team.