GRIVEL SIGMA WIRE D TWIN GATE

You'll feel safe pulling through the crux with Grivel's Sigma Wire D
Twin Gate Carabiner clipped to your climbing rope. This bent gate biner
has an additional wire gate to prevent accidental unclipping, and it's
as easy as clipping standard biners. The twin gate also increases
durability, with an incredibly high strength rating for a biner designed
for the rope end.