This Pinlock from HJC fits the HJ-20M and HJ-20ST visor. This transitional pinlock from HJC will change its colour based on sunlight reflecting from it. It will fit visors for HJC models:• C70• HJC FG-17• HJC IS-17• HJC RPHA STKey Features• Built-in pins on the shield along with the Pinlock Anti-Fog Lens transforms your single shield into a dual shield that will resist fog buildup.• Pinlock lenses are created out of a moisture absorbing plastic. The silicone seal on the lens creates an airtight pocket between the shield and lens.• The lens is placed between two adjustable eccentric pins, making it easy to install or switch lenses as weather conditions change.• Choose your preferred tint and the insert that fits the model helmet shield you have.• Easily cleaned; use lukewarm water or a small amount of mild liquid soap and water and a damp non-abrasive cloth only. Allow the lens to dry naturally.• The Pinlock lens is made of a soft moisture absorbing material; the lens is less scratch resistant than the face shield. Wrap the lens in a soft cloth material when storing extra lenses.