Hargrave Hargrave 22115 H566N, 568 Junior Cast C-Clamp-Nylon Caps, 0-Inch-1-1/4-Inch Jaw Opening, 1-3/16-Inch Throat Depth, 76 -Pack Ductile / Malleable Iron Castings Are Desired For Close Work In Pattern And Mold Making Used Extensively In The Aircraft / Aerospace Industry Because Of Their Weight To Strength Ratio Nylon Cap On The Tip As Well As Nylon Inserts Are Securely Fixed To The Foot Of The Clamp