Cart is empty
Information
Made of synthetic rubber, Armstrong sprue bases are made in the USA of quality virgin raw materials and therefore are sturdier and will last much longer than imported versions of this product.
This item is used with flasks that have an outside diameter of 3 1/2"". Tree type bases have a center hole that is generally 3/8" in diameter to accommodate a center sprue.
Discover a great variety of Interesting, Informative and Fun Jewelry Making Classes !
You can now sign up for classes online!
Our Extended Validation SSL certificate provides you with the highest degree of assurance that Armstrong Tool Supply Co. is a verified and trusted business and that your transactions are secure