Maddog Gear Premier EZ-mount Fin Grip Clamp-Double System secures the grip at 90 degree intervals for simple attachment. The heavy duty design carries guns, bows, fishing poles, shovels, etc. Maddog has engineered a soft rubber Fin Grip clamp which cushions and protects all of your gear. There is a built in shock dampening system in the base to aid in the smoother ride for your cargo. Easily mounts on tubular and composite racks both single and double.