Similar to the ASTL Model, Renfroe's AST Non-Locking Type Lifting Clamps have been engineered for lifting, turning, and stacking of lightweight beams and structural shapes, while a constant tension is applied to the lifting shackle.

The horizontal shackle allows the beam to be lifting with the web in a near sideways position by attaching the clamp to the load with the shackle positioned over the web, and between the flanges.

With a beam laying in a horizontal position, the clamp placed with the shackle overhanging the flange, users can lift, turn through 90-degrees, and raise the beam in a vertical position.