Standard Line Single-Use Motors D Thur G, Aerotech Model Rockets F Size 29mm Econojet Single-Use Motors, Aerotech Model Rockets Please click (Subscribe Now) to receive notice of special sales and new products WHY BUY FROM US?? In the Retail Hobby Business for over 33 Years No Hassle Returns Top Security, WE USE YAHOO & PAY PAL Shopping Carts Tens of Thousands of Satisfied Customers On the Web Since 2000 --RETURN POLICY-- If an item is defective or you are not satisfied with any of our products, you may return it for exchange or a full refund. 33 YEARS OF GREAT LOW HOBBY PRICES If You Have Questions, Please Call Toll Free, 1-800-225-6509 Ask for Doug or Wendy