Product Type: Anti electrical wall Product Size: 45*64mm Interface size: 20mm International Common Interface length Scope of Application: Electric water heater, Water medicine electric equipment 1: Thank you on your purchase, we're able to gift you with fine products and services, if you have any questions, please be happy to touch us. 2: Before all merchandise are shipped, we are able to behavior high quality inspections to ensure that the whole lot is steady earlier than sending. 3: If you've any high quality problems after receiving the goods, please touch us on the first time, we will discuss together, and we will present you with a satisfactory solution.