Birchwood's Stick-A-Bull 12" Sight-In Targets are self-adhesive and will stick to any surface. Targets are perfect for short or long range practice with multiple aiming points No more forgetting your staple gun or running out of staples with these targets. You can also extend the life and use of the target with the repair pasters. These value-added pasters can be used to cover bullet holes or separate aiming points.