... injection molding roller and dysmorphism parts . Our products with advanced equipment,mature techniques and with high precision, low noise, long-life and ... ,chrome,stainless steel,iron,ect. It can option )Roller Material nylon (POM,nylon,glass fiber,etc. It can option )Type (2RS ZZ ... ,Z ,RS,OPEN (metal or nylon) It can option)Size 4*18.5*7mmColour blackPacking details1 ...