Jupio Battery Grip MB-D14 for Nikon D600 D610 EN-EL15 Battery Tray JBG-N010 for sale online | eBay
Meike MK-D600 - Battery grip for Nikon D600 and D610 - Camera Gear
Amazon.com : Battery Grip Kit for Nikon D600 D610 Digital SLR Camera Includes Qty 2 Replacement EN-EL15 Batteries + Vertical Battery Grip : Digital Camera Accessory Kits : Electronics
Vello BG-N10 Battery Grip for Nikon D600 & D610 BG-N10 B&H Photo