This conveniently designed y connector is a handy dust collector accessory intended to help expand your dust collection system hoses and its applications. This fitting is commonly used in place of "T" fittings, providing a smoother transition to branched off main lines where design limitations will not allow use for overhead runs. Versatile Design-Whether you're splitting a hose run for a pair of sanders, or connecting your router table to a shop vac - the applications are endless. Most importantly, you'll find this 4 in. dust collector hose connector to be a valuable asset to keeping your workshop clean and clear of dust. This 4 in. Key Hose Clamps used to connect hoses to dust hoods, blast gates, connectors and other fittings - these keyed hose clamps can also be an essential accessory for connecting dryer vent hoses and other tubedconnections. With it's premium stainless steel construction and 4-3/8 in. clamping capacity, this clamp will resist scale and will not rust - delivering a tight and optimal seal under a variety of environmental conditions.These hose clamps feature an easy-to-turn blue key (knob) made from a strong and durable polymer. The key is designed to make the securing and un-fastening of the hose much easier, by hand and without the use of any tools. This eliminates the knuckle busting associated with flat head screw drivers or tiny socket wrenches. Simply twist and tighten. It couldn't be easier.