Perko Open Base Chrome CleatPerko open base cleats feature a chrome-plated zinc alloy construction. These cleats are available in three sizes: 4", 6", and 8". The 4" cleats are sold as pairs, while the 6" and 8" cleats are sold individually.Specifications: 4" Cleats (Sold as Pair); Length Overall: 4"; Base Dimensions: 2-1/8" x 1-1/2"; Max Rope Size: 5/16"; 6" Cleats (Sold individually); Length Overall: 6"; Base Dimensions: 3" x 1-3/4"; Max Rope Size: 7/16"; 8" Cleats (Sold individually); Length Overall: 8"; Base Dimensions: 4" x 2-1/8"; Max Rope Size: 5/8";