Here we have, what could be considered the GREATEST replicas of the Star Trek TOS hypos ever created by mankind! Back in 2001, I had founded Master Replicas. I was also in charge of designing all of the replicas, including the Star Trek product line. As such, we had developed a relationship with Greg Jein, who owned MANY original film props. Greg gave us access to numerous original pieces, so we could create our replicas, and we are all deeply indebted to him. A number of years later, Greg appeared at a convention and he had the medical equipment on display. Based on our prior relationship at MR, I had requested if we could photograph and measure the props and he said… With the help of a couple of my friends, and a great machine shop, I used those photos and measurements to create a VERY LIMITED run of these hypos. These are the ONLY hypo replicas that have been recreated from a direct study of the originals. They are virtually identical but without the 60 years of wear and tear. There are other replicas out there, but they are either of inferior quality, manufactured overseas, and/or were not referenced DIRECTLY off the originals props! These are the only ones of their kind. There are THREE different types. TYPE 1 FIRST SEASON: Polished to a mirror finish with the sliding body. As seen in the episode Miri. TYPE 2 SECOND SEASON: Bright-brushed finish, moving plunger… As seen in Return to Tomorrow. TYPE 3 SECOND/THIRD SEASON: “Hybrid”. Comprised of several different parts, mixed from type 1 and 2. Also a hissss version. Seen throughout 2nd and 3rd season. The type 1 has a black delrin inner layer, and ball-bearings and springs that ride in a track, so that the sliding body moves very smoothly and doesn’t wear on the inner body tube. The types 2 and 3 have an extruded brass tube press-fit inside the aluminum body and a rubber O-ring, lubricated with pressure grease that rides inside so the action is VERY smooth and it hisses. NOT exactly like on the show, as that was a dubbed sound effect! The polycarbonate vials are welded shut and lock in magnetically , so no goofy glass bottle with velcro like SO many other replicas have used! They are filled with mouthwash, that is LOADED with alcohol, so they won’t go septic over time! YOU MUST SPECIFY WHICH VERSION(S) YOU WANT WHEN ORDERING!!!!! NOTE: THE PRICE SHOWN IS FOR ONE HYPO AND ONE MAGNETIC VIAL! IF YOU ORDER A SECOND OR THIRD REPLICA, THERE IS A GREAT DISCOUNT, AS SHOWN. UNLESS YOU ORDER and pay for ADDITIONAL UNITS! NOTHING ELSE IS INCLUDED!!! Med kit is for display only! I cannot state that enough!! But you won’t WANT to return it, because they are AWESOME!