size range:300-800 for copper wire drawing or stranding size made to order flat plate steel bobbin size range: 300-800mmsize: made to orderdetailed size ,pls contact us.welcome leave us a message.DESIGN 1)FOR FINE WIRE DRAWING 2)FOR STRANDINGWE ALSO CAN MAKE ZINC COATED (WHITE ZINC OR COLORFUL ZINCE) sample size in the photo:flange 400barrel 170inner width250height270centre hole 72