Estes 1691 E12-0 Booster Stage Model Rocket Engines, 2 Count – 24mm, with Starters & Plugs Display: 5

Display: 5

All beakers have double-graduated metric scales

Inch and centimeter rulings for each measuring and cutting

The hFE transistor test measures the common-emitter gain of a transistor

whichcorresponds to 341

Estes 1691 E12-0 Booster Stage Model Rocket Engines, 2 Count – 24mm, with Starters & Plugs Display: 5PLEASE NOTE: These are large (24mm diameter) booster stage engines for multi stage model rockets. Please refer to the instructions that came with your rocket (or the rocket's product description) to determine engine compatibility. Take your two stage flights higher with the Estes E12 0 booster a reliable 24 mm booster stage engine built for powerful, predictable separation and climb. Perfect for hobbyists who want an easy to use boost to add punch to