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. SKU Plate Thickness A (in.) Max. B (in.) C (in.) D (in.) E (in.) F (in.) G (in.) H (in.) J (in.) Weight (lbs) AST-00.50-A 0 - 3/4 10-3/4 6-11/16 - 1-3/4 6-3/16 1-5/8 2-1/2 1/2 10 AST-01.50-A 0 - 3./4 13 8-1/2 - 2-1/2 7 2-9/16 3 5/8 20 AST-03.00-A 0 - 1-1/2 19-1/4 12-1/2 - 3-3/4 11 3 4-5/8 3/4 50