These lifting swivel's avoid twisting of the rope should the load rotate during lifting.
They are available in two versions and both are mounted on sealed ball bearings.

Swivel S is a compact swivel for use with one person loads. BL 23kN Weight 95g CE.

Swivel L is for use with two person loads and is therefore useful in rescue situations.
The Swivel L can now fit up to three karabiners in either of the ends. BL 36kN CE NFPA G Weight 150g.

Conformance: CE, EAC, NFPA 1983 Technical/General Use