Use where a good quality 3" U-Bolt/ Saddle Clamp is required. T-304 Stainless steel for superior corrosion resistance. 5/16" U-Bolt w/standard nut, uses 9/16" socket. Saddle has reinforcing ribs & round holes. Natural Mill finish. Can be brushed or polished prior to installation. It is recommended that hand tools be used to install these clamps. Power tools may damage them.