Raumer Hang Fix M8XL
Stainless (316L) caving anchor of the 'through bolt' variety, M8 x 100
Two expanding collars increase security, making it very suitable for caving in terms of bolting up and also setting anchors for pitches - but NOT for climbing anchors to take big leader falls. The M8XL is better at coping with poor rock tham the M8L.
Requires a drill, or Rocpec type hand drill, to place it. Best bit is probably the Hilti four tip; 120mm long is just right and avoids over drilling - which wastes battery life
Strength 20 - 22Kn depending upon direction of load.