EXTENSION SPRING, UTILITY, HIGH CARBON STEEL, ZINC PLATED, END TYPE CROSSOVER CENTER LOOPS, OVERALL LENGTH 4 IN, OUTSIDE DIA 15/64 IN, WIRE DIA 0.029 IN, LOAD 3.72 LBS, DEFLECTION @ LOAD 3.00 IN, SPRING RATE 1.06 LBS/IN, MEETS/EXCEEDS ASTM A227, PACKAGE 12