The 3M™ G-Series retractable lanyards have a lightweight design. Except where noted, the hardware of the G-Series retractable features 3600 lb. gate rating and the internal working components are machined from either stainless or zinc plated steel designed for improved resistance to the damaging effects of corrosion. Grivory™ reinforced thermoplastic is used in the construction of the housing.3M OH&ESD,, (800) 560-1094.