Reversible rubber/metal spiked feet (set of 3) supplied with a dedicated fixing tool. The spike is made of a special hard anodized aluminum alloy extremely resistant to corrosion. For tripod: 190CXPRO4. SPECIFICATIONS: Attaches By 11.6 mm hole attachment; Color black background; Material Screws and Fixings Stainless steel; Material technopolymer; Weight 0.43 lbs.