Fixe V-anchor+ Draco 3/8 Duplex Ss. The 'V' Anchor is the strongest safest anchor for indoor use. Two DRACO carabiners placed in opposition eliminate the possibility of a rope escaping. The design equalizes the load between two attachment points. Features of Fixe V-anchors: 10MM fits 3/8" Bolts 13MM fits 1/2" Bolts Package Contents: Fixe V-anchors