ER4043 TIG Welding Rod, Aluminum, 1 8 in dia, 36 in L, 10 lb Tube no checkout Exclusive Latch Tight™ feature ensures Exclusive Latch Tight™ feature ensures that keys cannot be accessed until the very last lock is removed regardless of padlock shackle diameter or length Integrated storage organizes up to 12 keys or hundreds of bulk keys Up to 14 workers can apply their personal safety padlocks or hasps heavyweight product One of the oldest and most widely used welding and brazing alloys Contains silicon additives which result in improved fluidity (wetting action) of the weld pool Also produces a weld less sensitive to cracking Can be used to weld various grades of aluminum