PRACTICAL: These foam insulation board washers are ideal fastener kits for securing and installing backboards, foam boards, etc., efficiently improve work efficiency and bring you great convenience PACKAGE INCLUDES: You receive 500pcs galvanized steel foam board fasteners with the diameter of about 1-1/8 inches. (Screws not included) with cut- gloves for daily use and replacement MATERIAL: Foam board fasteners are made of steel, the outer is treated with rust-proof galvanized treatment, reliable and sturdy, not easy to deform or rust, can be used with confidence for a long time EASY INSTALLATION: 1-1/8 inch board washers have a groove in the center with drive screws and a raised backside to insert into the of the backing board to hold it in place, easy for one person to complete VERSATILE USE: These foam board fasteners can be used for interior walls, ceilings, gypsum board, wall insulation boards, composite boards, extruded boards, foam , , drywall, wood and other materials, Manufacturer: Akfldms