T-H Marine Assorted Cable Clamps Kit - Cable Clamp Kit 1/4in, 3/8in, 3/4in. Features: • Diameters included: (5) 1/4in, (5) 3/8in, (2) 3/4in • Marine grade • Meets USCG requirements for vessels under 65ft • Each clamp requires 1 #8 pan head screw (not included)