FALL PROTECTION Construction Harness, Series: TUX, S, 130 to 420 lb, Pass-Thru Leg Strap Buckle, Pas Equipped with side D-rings that make it ideal for work positioning applications, the construction Tux is ideal for concrete or rebar contractors. The fall protection harness is also sewn into an external vest, which reduces the possibility for tangling or contamination of harness webbing..