3 Piece straight jaw tongue and groove plier set. The Crescent plier line has tongue and groove, slip joint and solid joint styles all in the most common sizes. They are made from alloy steel providing the strength and durability needed for professional, industrial and at home uses. The tongue and groove and solid joint styles both have a non-slip grip allowing for user safety and hand comfort. The CRESCENT line of pliers are made for gripping, twisting, cutting, stripping, or bending wire and cable in professional, industrial and at home uses.