Gauge 0-300psi for standard paintball preset regulators. 1/8NPT thread.

About the WADSN brand:
WADSN is a Chinese supplier of quality functional replicas of military accessories, primarily weapon accessories such as flashlights, lasers and mounts. Thanks to the high quality and precise processing, the replicas can hardly be distinguished from the originals. All this for very reasonable prices. Assembling your ideal weapon has never been easier!

About the product:
Weight:121grams
Materials:CNC aluminum
Length:110mm / Diameter: 30mm
Feed: 2x CR123A (not included)
Fixation: picatinny
Powerful: 400 Lumens

mode selector is located on the back of the laser, easily accessible. The X400 ULTRA is installed on a RIS Picatinny rail present on most airsoft replicas..