Kotobukiya M.S.G. Modeling Support Goods #14 Vectored Thruster Type A Model Kit MJ14

The nozzle parts come in two sizes, and both come in two variations with different sizes and shapes to depict the expansion and contraction of the thrusters. The kit's 3mm connectors work perfectly with Kotobukiya's original model kit lines such as Frame Arms and Hexa Gear.

Product Specifications
VECTORED THRUSTER (large) can be enlarged by connecting multiple thrusters together.
The base of the VECTORED THRUSTER (small) part is moveable, allowing you to adjust the direction of the thruster.
The Jet Nozzle has two large variants, and two small variants which each come with parts to depict the nozzles in expanded and contracted configurations customized to your liking.