Powers Fastening Innovations 2870USA Domestic 1/4-Inch by 1-1/2-Inch Zamac Nail In Anchor Stainless Steel Mushroom Head, 100 Per Box The Zama Nailing is a tamper proof nail drive anchor which has a body formed from Zama alloy Can be used in concrete, block, brick or stone 100 per box Nails are available in carbon or stainless steel