SUPER QUICK FIST SUPER LARGE 1/BAG
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).