Delta™ Construction Style Harness, (2) Waist D Rings; Back D Ring, Large ORS NASCO Deburring Arbor Thread TPI Deburring Arbor Thread TPI or Pitch 5 8 in 11 Big Catalog YES Body Material Aluminum Backing Brand Weiler Catalog MPI Catalog Construction Catalog NO Country of Origin US Dia microorganisms and non hazardous light liquid splash Bound seams are covered with garment fabric to reinforce the seam and to reduce the potential for particle penetration Elastic at both ends (bicep and wrist) for arm protection Automatic stand up back D ring enables efficient dorsal connections Integrated suspension trauma straps included on most models Impact indicators provide ease of inspection for webbing integrity Revolving torso adjuster buckles available on select models Equipped with auto resetting lanyard keepers for fast and easy parking of snap hooks and carabiners