Feature: -For Espar / Eberspacher or For Webasto 42mm ducting connector / joiner or any other 42mm diameter systems. -Suitable for connecting any 42mm to 42mm ducting. -For extending 42mm internal diameter ducting. Description: Condition: 100% Brand New Model Number: H29301 Product Name: Duct Joiner Connector Material: Plastic Color: Black Length: 50mm/1.96 Outer Diameter(OD): 42mm/1.65 Inner Diameter(ID): 39mm/1.53 Function: Connects 2 lengths of 42mm ID ducting together Package included: 1x Duct Joiner Connector Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.