The RING Large connection ring installs directly onto the SEQUOIA harness's attachment bridge to improve the arborist's lateral mobility. Installs directly onto the SEQUOIA harness's attachment bridge to improve the arborist's lateral mobility Round shape ensures good positioning of the connection ring when it stops against the gated rings Specifications: Material(s) : aluminum ID: 46mm (1.8" inches) Weight 70g MBS 23Kn all directions Certification(s) : CE