STANDARD U-BOLT WITH MOUNTING PLATE, U-BOLT WITH MOUNTING PLATES, 304 STAINLESS STEEL, FINISH PLAIN, THREAD SIZE 5/16 IN.-18, THREAD LENGTH 1 IN, INSIDE LENGTH 3 11/16 IN, INSIDE WIDTH 3 IN, PIPE SIZE (IN.) 2 1/2 IN, CHARACTERISTICS HAS COARSE ROLLED THREADS, FOR STEEL OR WROUGHT IRON PIPE SIZES, INCLUDES 1 PLATE AND 2 NUTS, PACKAGE QUANTITY 10