... roll-axis rotation - cross-line 3)Standard: GB5237-2008 alloy roller Aluminum1)Alloy No.:6061,6063...2)Temper:T3-T83)Surface Treatment ... ,Polish 4)Coating Colour:silver, bronze, champagne, black, blue, glod and so on. 5)Certificates:ISO 9001:20086)Standard: GB5237-2008 ... film wrap, string, woden case,or according to customers' need. alloy roller Aluminum