WCM-450 metal single coil forming machine can forming size from 1/4'' to 2'', welcome to visit our factory to test the machine. Model:NBC-450 Forming Sizes 1/4"5/16" 3/8" 7/16" 1/2"9/16"5/8"3/4"7/8" 1"1-1/8"1-1/4" Working speed: 5000 pcs/hour Air Pressure: 6-8bar Total Power: 1.5kw Machine Dimension: 800*700*1600mm Machine G.W:250kg power: 220V / 1 PH/50/60HZ for details, welcome to check http://www.autobindingmachine.com whatsapp or wechat 008613431348359 email:tina@nanbobinding.com