... me your drawings,we can do as your design Timing Belt PulleyPulley type:MXL,XL,L,H,XH,XXH,3M,5M ... me your drawings,we can do as your design.Material for option:aluminium alloy,steel,stainless steel,iron,plastic,nylon,etcMax ... ,black of oxidation,zincing,nickelage,anode.Machine:CNC engine lathe,milling machine,drilling machine,gear shaper,hobbing machine,grinder,testing center belt conveyor ...