Rubber suction cup foot (set of 3) with retractable stainless steel spike. The suction cup increases the suitable area of the feet, giving much greater stability when needed. The foot can be removed and replaced at will. Base diameter: 1.97 in.; color: black; material: technopolymer; screws and fixings: Stainless steel; attachment: 20.4 mm hole; weight:0.57 lbs.