Model Number: CH201501020 Brand Name: CHONGHON Key Specifications/Special Features: Material: forged carbon steelQuenched and temperedSizes: 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1.1/8, 1.1/4, 1.1/2 inchSurface: hot dip galvanizedUltimate load is 5 times working load limit