... :cnc worm,cnc worm gear,cnc worm wheel2) material:brass, copper ,steel, alminum 3)Color: Silver,White,Black,Bronze,Beige,Oak ... . Alena Lee(Mb:86-13925757720,skype: alena.lee2000 ) Customized CNC copper/steel worms ,gears , Verified Information This information is Verified by ...