Heads provide maximum strength for the most demanding industrial and commercial digging applications. Replaceable blades are triple riveted to thick yokes for long life. Durable carbon steel blades are sharpened for easier digging. No. 1 grade ash or maple lacquered handles are square cut for added strength at point of greatest stress. Handles are double bolted to yokes for long life. Yokes and blades painted with the best in electrostatic painting technology.