304 grade Stainless Steel Antiluce Fastener. 12mm x 25mm thread, 6mm between toggle and mounting surface. Please NOTE these do not come with M12 nut. Designed originally for securing lorry side and tailboards, its use has been extended to pallets, transit crates, lockers and a wide range of other products, sideboards, tippers, tail-lifts, trailers and tankers, livestock carriers, sprays, graders, sorting equipment, compactors, shredders, stillages, HVAC, engine covers, hatches and doors.