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Scale Accessories
twist lock shatter resistant safety cap to protect blade during storage
Supports turbo timing settings
Replaces Speed 370 and Speed 400 applications
1/2A3-4T Engine Educator PkHAZ (24) - EST1788 PRO348217 Scale AccessoriesOverview Estes offers rocket engine bulk packs in four total impulse ranges. These packs may be used with the rockets listed on our Web Site or other Estes rockets. The description of each kit lists recommended engines. Our engine bulk packs contain: 1) 24 rocket engines 2) 30 model rocket igniters 3) 24 reusable igniter plugs 4) 75 4. 5 in. (11. 4 cm) squares of recovery wadding, enough for approximately 25 launches.