APPLY TO - Square U-Bolt is good for fixing the locked object to pipe or wood, etc. Fits for trailers, plumbing, and other home and industrial applications, etc.SPECIFICATION -Material: 304 Stainless SteelFit Square Object Size: 20mm /0.79-inThread Size: M6(D)Overall Size: 45mm(L) x 32mm(W) / 1.77-in x 1.26-inQUANTITY INCLUDED - 2 x U-Bolts, 4 x Nuts, 4 x WashersADVANTAGE - U bolt made of 304 stainless steel, constructed with good performance in anti-rust and corrosion resistance, which have a stable connection.EXPLAIN - First fix the locked object with U-shaped bolts, install the washer, and then lock it with nuts.