Allows you to convert almost any 18mm standard engine BT70 based model rocket to 24mm engines! Accepts Estes 24mm "C11" and "D" size model rocket engines. Fits in any BT70 size body tube. This engine mount kit can be converted to accept Estes "E" engines with a 3.75" engine hook. All FlisKits engine mount kits come with highly detailed instructions and laser accurate, sturdy fiber centering rings to allow for easy construction, super strong mounts and long life. Made in the USA |