Sling Shot Spare Sling gives you the extra supplies that your sling shot will need to keep working if the original sling breaks.
Sling Shots Spare Sling gives you the ability to repair your sling shot. The sling is probably the one item that will break on your sling shot so having a extra sling you will be ready if that happen. You should buy extra repair items for all your survival gear just in case something goes wrong so this item will give you the back up supplies for your sling shot.