8 Inch Nails is a passive collectible item added in The Binding of Isaac: Afterbirth.
- +1.5 damage.
- Tears are replaced by nails that have increased knockback.
- Any item that normally colors Isaac's tears red will make the nails bloody.
- Despite the appearance, the nails do not grant penetrating shots.
- Piercing Tears - Enemies will hit with some knockback as the nail hits them.
- Brimstone - Enemies will take decent knockback from being hit with the beam.