Check the listing for details. #227 Ball Head 95°-105° Adjustable Header w/ Flange RC Boat. Color: Silver, Condition: New. Listed at 31.34 USD. Description: This high quality stainless steel ball head header and aluminum water cool flange combo is perfect for Zenoah 23-26cc gas engine or the alike engine. With the ball head, the degree is adjastable from 95 degree to 105 degree without bending or break during the boat running. It fits for 7/8" exhaust pipes. The set includes o-rings, bolts, water nipples and screws.the hole center distance of mounting hole of the flange is 34mm. : fit for: 7/8" pipe : material: stainless steel pipe and aluminum flange Payment Policy : We only accept payments via PayPal. Shipping Time & Method: Item will be shipped within 3 days after payment is confirmed. Goods will be sent via airmail . Delivery takes about 18-25 business day (without holidays). All products have been checked and packaged in good condition before dispatch. Please make sure your address in PayPal is matched with your shipping address before pay. If you would like to change the address, please contact us IMMEDIATELY after your payment. Return policy :After receiving item.,items can be returned within 30 days . Items must be the original packaging. No use. No damage. Buyers bear the freight cost.