Company Information Shaoxing Meric Transmission Co., LTD, is the middle scale factory specialized in transmission parts, mainly produce: chain coupling and chain sprockets since 1994. Product Description KC 3012 chain coupling Standard: KANA, KC 3012 chain coupling : include two pieces of Aluminum cases, two sprockets, one duplex roller chain, four screws, two O-rings, one hex key. Packaging & Shipping KC 10020 chain coupling Packing: Plywood Case with caton box KC 10020 chain coupling Port: Shanghai/Ningbo