You can own this trick piece of hardware used on every Gemini space capsule.

Here is a brief synopsis of the unit shown when integrated with Gemini:

Maneuvering System Total Weight: 120 kg. 
Reaction Control System Quantity x Thrust: 8 ea. x 10 kgf. 
Reaction Control System Propellants: N2O4/MMH. 
(Nitrogen Tetroxide/Monomethyl Hydrazine)
Reaction Control System Isp: 288 sec. 
Reaction Control System Total Impulse: 109,876.87 kgf-sec.
Approx. Weight:  4 kg

Call or email for pricing

These thrusters are a significant part of the US Manned Space Program