This is a selection of 2 vintage Metal or Wood Working C Clamps both marked CINCINNATI TOOL USA. One is also marked (H) HARGRAVE 3 NO 44. The cast iron frame measures 6 ¼ by 4 inches with a 3 7/8 inch opening for material up to 3 1/8th inches. The swivel head has burn edges from welding use and rod handle bending. The small one is also marked (H) No.50 Super Jr. Forged Steel Heat Treated Made in U.S.A. It has a 1 ¼ inch opening for material up to 1 inch. They are well used with wear and rust in good condition.