Arms completely below and in front of 99.9% of all containers and compactors Ultra lightweight, fully adjustable tarper designed for the weight conscious and discriminating hauler Patented elbow arms and Rotary Actuators cover 10-40 Cu. Yd. containers without the roller extending past the rear edge of the container. Roller can be placed in cradle, on rear edge of container, or on frame rails of truck Single mounting bracket modular assembly for fast & easy Installation All pivot points utilize a self lubricating fiber bushing for proper arm lubrication and maintenance NO VALVING required for proper arm sequencing Rotary actuators are a totally enclosed gear pivot assembly. The gears are in a constant oil bath, can rotate 180 degrees, and are phase opposed Lowest Profile Arms in the industry!!