Adjustable Clamp 1460 6" x 3-1/2" Adjustable C ClampsThe Adjustable Clamp Company was incorporated in 1903, by Adele V Holman, to manufacture genuine Jorgensen Handscrews. Today 5 generations later great-great-grandson Douglas Holman is President of the company. Throughout the years each Holman has put his or her mark on the company.Adjustable Clamp 1460 6" x 3-1/2" Adjustable C Clamps Features:; This popular line of light/regular-duty clamps, are preferred for most do-it-yourself and household applications; Ductile and/or malleable iron frames with bright plated finish and ribbed to resist side strain; Machine ground anvils; Cold-drawn steel screws with smoothly rolled threads; Steel sliding-pin handles