MSA Plastic/Nylon Fas-Trac III Replacement 4 Point Designed with input from hundreds of customers For use with MSA Helmets, as specified Flush rear lug attachments eliminate pressure points Three levels of nape strap adjustment for customized fit Graspable ratchet with ultra-smooth rotation and steadfast hold Note: This is a 6 point suspension is exclusively designed for the V-Gard 500 and the MSA Smooth Dome helmets. It is not compatible with Standard V-Gard helmets