EXTENSION SPRING, UTILITY, HIGH CARBON STEEL, ZINC PLATED, END TYPE CROSSOVER CENTER LOOPS, OVERALL LENGTH 6 IN, OUTSIDE DIA 1/2 IN, WIRE DIA 0.063 IN, LOAD 16.80 LBS, DEFLECTION @ LOAD 3.25 IN, SPRING RATE 10 LBS/IN, MEETS/EXCEEDS ASTM A227, PACKAGE 3