ACR Copper Pancake Coil For Air-Conditioner, Refrigeration. 1. O.D.: 1/8"-7/8" 2.W.T.: 0.30mm-1.5mm 3. Length: 15m, 18m, 25m 1. ACR Copper Pancake Coil for Air-Conditioner, Refrigeration.2. Outside Diameter: 1/8"-7/8"3. Length: 15m,18m,30m.4. Standard: ASTM B280, JIS H3300, EN12735.5. Package: 3-20 Rolls/Carton Box.