Standard to D Engine Adapter

Two simple steps transform a standard engine into a D size. Insert a standard engine into the adapter, and insert the adapter into a rocket. 3 adapters per pack. Reusable. Adapts D engine mounts to hold a standard engine. NOTE:  This motor adapter has been tested in products that use ESTES metal engine hooks. It may not work with other brands of engine hooks. Rockets weighing up to 4 ounces that would normally fly on C11 or D12 engines can be flown on B and C engines.

Tube Cutting Guides (5pc)

A quick and easy way to cut all of the most common sized body tubes to custom lengths! Heavy duty plastic guides slip easily onto your body and allows for precision cuts for specific lengths. 5 guide sets are included. BT5, BT20, BT50, BT55 and BT60. A must have for all rocket builders! You won't find an easier way to shorten that body tube!