AGV Pinlock Lens 70 K5 S,K3 SV (GT4)AGV Pinlock Lens 70 K5 S,K3 SV (GT4) The Pinlock 70 is a premium fog resistant solution for riders. Enhanced with stronger fog resistant properties, the insert lens has extended fog resistant endurance which helps riders see better through challenging weather conditions. The Pinlock 70 creates a double shield system through a silicon seal between the helmet face shield and Pinlock insert lens, which makes up a double glass type of solution that