• Holds objects from 2.5″ to 9.5″ (64 to 240mm) in diameter. • Each clamp supports a safe working load of 50lbs (23 kilos). • 2 clamps support 100lbs (45 kilos). • Mounts with three #10 bolts or screws. • Mounting area: 6″ x 7/8″ (152 x 22mm).