Velpaw Double C Clamp Mount Base,3.27 Inch Jaw Opening,Top and Side Mounting Holes Compatible with 1" and 1.5" Ball Bases,for Boats, Kayaks, Tables Etc

["The top and sides of the C-clamp base have pre-drilled holes. There are 20 holes with a diameter of 5.6 mm on the top and 4 holes with a diameter of 6 mm on the sides. The holes are compatible with B 1“ and C 1.5” size round ball base, allowing for unlimited expansion.","Designed for multiple scenarios, whether it's reinforcing a watercraft, securing a workshop workbench, the 3.27-inch (approx. 8.3 cm) extra-large opening easily grips objects of different thicknesses, eliminating the awkwardness of “not being able to grip”!","Engineered with a reinforced internal structure and precision-tested for extreme loads, this clamp outperforms traditional iron models at half the weight. Built for the toughest environments—from damp ship holds to open-air sites—it offers double the strength with long-term rust and corrosion resistance","Anti-slip texture increases friction, composite nylon blocks reduce vibration, and curved knobs quickly and securely grip surfaces","Say goodbye to rust, scrapping, and breakage risks! Marine-grade aluminum alloy casting ensures a one-piece construction that is sturdy and durable, saving you the cost of repeated replacements. From home repairs to boat modifications, this heavy-duty clamp is a reliable partner!"]