Sturdy supports won't bend under pressure and are suitable for wood, metal and laminate shelvingFelt-base book support is stamped out of 18-gauge rolled steel and hand buffed to produce smooth, rounded edges; no burrs. Features a 6"L tongue to slide under books for support; 1 3/4"L back base provides stability. Rubberized composition cork base prevents slipping and keeps books upright, relieving the strain on book spines. Available in 10 scratch-resistant, non-fade powder paint colors: -01 black, -02 blue, -08 desert sand, -09 grey, -10 green, -12 jade green, -18 red, -25 yellow, -48 putty, -53 burgundy. Overall dimensions: 9H x 6W x 7 3/4"D