It is Carabiner,which is called Carabiners as well
Item Number: CB1

Description:

Material: 7075aluminum-alloy

Length:80.60mm

Width:48.00mm

Weight:25.50g

MBS: 5KN

Packing:

1 piece/opp bag, 500pieces/carton.

Carton size: 38*36*21cm

Gross weight: 15.00kgs