1" O.D. tubing light series DIN 3015 anti-corrosion strut mounted clamp manufacture by RSB. Polypropylene-CR clamp body, 316 stainless steel cover plate, strut adapter and bolts. The clamp body has been specially designed to reduce crevice corrosion between the clamp and the stainless steel tubing. Designed to be used with 1-5/8" x 1-5/8" strut. Other sizes are available upon request.