The R450C clean room TriStand comes with reversible 410 stainless steel jaws (with bonded rubber on one side), anodized aluminum base, and a clear polymer slip tube (easily removed) to cover the chain. Chain lubricant is food grade, non-petroleum based. Reed TriStands are the sturdiest, have the most capacity, have the only double-faced jaws (at no added cost), are the most portable, and have by far the greatest value.