Aluminium casting feed frame Type: 504A Roll diameter:40mm V type,1.0/1.2mm CE,Rohs,ISO9001:2000 Name:Aluminium ... ø30,"B"means the roll diameter is ø40V is the type of roll ,we have V,U,K,Three types,"V ... /1.0,1.0/1.2,1.2/1.6,1.6/2.0,2.0/2.4Stent used four gears (2.0 mode)drive,only ø32 ...