SURFACE: POLISHED AND GALVANIZED SPECIFICATION: PRODUCT NAME MATERIAL DIAMETER (MM) LENGTH (MM) BLIND RIVETS ALUMINUM AND STEEL 3.2 6,8,10,12 4.0 6,8,10,12,14,16 4.8 6,10,12,14,16,18 PACKAGING:50LB/CTN, 48CTN/PALLET, 18PALLET/20 FEET CONTAINERWE ALSO PROVID BULK BOX.