Features: Made of premium plastic material, durable and impact-resistant. Suitable for connecting any 60 to60/75 to 75/90 to 90 ducting. For extending 60/75/90 internal diameter ducting. Simple design ,Integral solute, sealed leakproof ,Thickening material, strengthen the hardness. A great aftermarket replacement for your old or broken one. Specification: Product Name: Duct Joiner Connector Function: Connect 2 tubes together Colour: black Material: plastic Size: 75mmx106mmx48mm Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Only the above package content, other products are not included. On- Time Delivery. Full refund if product isn t received in guaranteed dlivery time. Longer Protection. 15 day more protection after order completion. Returns Extra. Return any product,only those in perfect condition. Guaranteed Quality or Full refund. We support drop shipping: Unlimited stock to fulfill the orders on a daily basis. No invoice or receip or promotional materials included. if you have lots of orders,you can give us Excel/csv. If you are satisfied with our product and service,please leave us positive feedback All 5 stars. If you have any problem with our items or services, please feel free to contact us first. We will do our best to solve any problem and provide you with the best customer services.