Diameter: 20mm Working speed: 3000 rpm/min Maximum lift: 2m Upper limit of high temperature: 100 Maximum flow: 400L/h Voltage range: 12V Tips: The inlet and outlet diameters of 12W pipes are all 16-20mm pipes. If your pipe diameter is less than 16mm, you need an adapter. Drop Shipping Service: 1.All products in our store support drop shipping , we sincerely look forward to working with you 2.We can Support CSV/Excel File Dropshipping.- E-mail Support. 3.There is no limited stock to fulfill the orders on a daily basis 4.No invoice or receip or promotional materials included. About shipping: 1.Orders processed timely after the payment verification. 2.We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. 3.The images shown are not the actual item and are for your reference only. 4.SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit time may vary, particularly during the holiday season. 5.If you have not received your orderafter 30 days from payment, please contact us. We will trace your order and get back to you asap. Our goal is customer satisfaction How To Order: Please use the " SHOPPING CAR " to make an order for more than one item, Click " Add to Car ", after all items been added to your shopping cart, click " View Shopping Car ",then" Buy from this seller ", at last, pay it. Feedback: Please leave us 5 stars as encouragement if you are satisfied with our items. Please contact with us if not satisfied,we will offer best service until you are satisfied