The Big Horn 11735 Quick Hose Clamps are the quickest and most efficient clamps to connect and disconnect dust hoses to dust collection systems. Attaching or detaching dust collection hoses to standard clamps can be a hassle but our quick clamp design makes this a breeze. Just squeeze and release the clamp to connect the hose to dust collection ports. That simple! The spring action design firmly holds clamps the hose on to different dust collection systems. These 4” clamps open up to a maximum of 4-7/8” to ensure they are a fit for all types of 4” standard dust collection hoses. Equipped with rubber coated grips for easy gripping and manufactured from double-loop steel for strength and durability.