i maybe wrong but i thought it only came in one version, got this from the dye site
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THROTTLE 4500 PSI PRESET AIR SYSTEM
£145.36
The Throttle Preset is a technologically advanced yet simple hassle-free regulator and is quickly becoming the favorite style among professionals today. The Throttle Preset is factory set to an efficient 850 psi. This unique design provides maximum unrestriced air flow at a constant output pressure which is more than suitable for any marker available today. As with most preset systems, this regulated air system should be used in conjuction with a good in-line reg, such as our Hyper Reg, so all you have to do is just screw in and play.
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