The new Ver-2, Gen-3 Engines offer the option of routing your air hose to the rear by using a 90 degree rear air/milsim adapter. This is without a doubt the least obtrusive most comfortable way to route your air hose. The M4 Plate Connect combines the comfort of having your Engine hose routed to the rear along with the convenience, ease of operation and secure hose connection of Redline's Grip Connect. It uses a specially made, heavy duty steel ambidextrous sling plate that is drilled and tapped at a 20 degree angle to mount Redline's custom quick connect nipple. The nipple has an internal o-ring that seals on the hose just like Redline's Grip Connect. Kit also includes the 90 deg. rear air (milsim) fitting. Features: Routes the Fusion Engine Hose to the Rear 90 Fitting included Steel Ambidextrous Sling Plate Compatibility: For PolarStar Fusion EnginesMaterials: Nylon, Steel