The 15SCK3 Suction Cup Feet from Manfrotto are designed for select models of Manfrotto aluminum tripods. The rubber "suction cup" feet provide additional stability on smooth surfaces and feature an integrated retractable metal spike for anchoring the tripod in snow, sand, ice, and dirt. The feet are easily attached to your tripod by removing the original rubber foot from each leg and attaching these with the included screwdriver.