Specially designed to install on shields with built-in pins, the PINLOCK Fog-Resistant Lens transforms your single shield into a dual shield that will resist any amount of fog buildup.. With ProSeal. Airtight chamber. Interchangeable. Easily cleaned. NOTE: Do not combine a Pinlock tinted lens with a Pinlock prepared tinted shield. Only use a Pinlock clear lens with a Pinlock prepared tinted shield.. Lens and shields must be purchased seperately. FIts IS-17 and FG-17 helmets DOT FMVSS No. 218 Certified.