HOG&';s newest and best Diaphragm Regulatror 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. Environmentally sealed for contaminated or cold water use Constructed of both Trivalent-Chrome and Black Zinc Chromate Plated Brass High Performance Low Profile Balanced Diaphragm 1st Stage 5 LP Hose Ports on compact swivel, 2 HP Hose Ports