Rhino Gear Rhino Gear SKR968IRVBC 6 in. Grip & Grease Lock on Grease Coupler - 6 in. MSRP: Price: 2099-12-31 $39.90 The Rhino Gear SKR968IRVBC 6 in. Grip & Grease Lock on Grease Coupler is a coupler that attaches to a grease gun to keep the grip and barrel clean. It has a 6 in. grip and a grease lock to keep the... Add to Cart Add to Cart