This is the Hog D3 Env w-Zenith Smoke Scuba Diving Regulator Set Features: Regulator 1st & 2nd Stage w- Hose Adjustable 2nd Stage, Balanced 1st Stage, Balanced 2nd Stage, Swivel 1st Stage, Venturi 2nd Stage Hog D3 DIN 1st Stage Sealed HOG's newest and best Diaphragm Regulator Yet. Balanced Diaphragm, 2 HP and 5 LP Ports, Compact size, routes like a balanced piston but is a Diaphragm! 5 Port LP Swivel rotates 360 degrees with hoses, unlike most tech swivel regulators. Higher performance than the HOG D1. Hog Zenith Second Stage The new Hog Zenith Reversible Second Stage is an evolution of our proven Classic Pneumatically Balanced 2nd stage. The front cover has been redesigned to improve the performance, function, durability, and styling of the HOG 2nd Stage.The Zenith utilizes a soft touch silicone centre portion to provide the ease of clearing found in our HOG Soft Front Cover Accessory but with far superior durability.The Zenith also has new styling that helps to control free flow in current while also providing a cutting edge
