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J.C. Renfroe 1-Ton M Clamp, Locking for 3/4" to 1-1/2" Jaw Opening for Prefabricated Sections, Lift: Structural Shapes
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Amazon.com: J.C. Renfroe Clamp Assy - Smooth HR - 1/4 Ton - 0 - 1 (HR-00.25-A-SM) : Industrial & Scientific
RENFROE Plate Clamp: Vertical Lift, 6,000 lb Safe Working Load, 0 in to 1 in Jaw Capacity - 48GP84|LA-03.00-A - Grainger
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