• Holds objects 1" to 2.25" (25 to 57mm) in diameter. • Each clamp supports a safe working load of 25lbs (11 kilos). • 2 clamps support 50lbs (23 kilos). • Mounts easily with one #10 bolt or screw. • Mounting area: 2 3/4" x 7/8" (70x22mm).