HJC HJ-20M/HJ-20ST Clear Pinlock Insert DKS111 hik3000(718). HJC HJ-20M/HJ-20ST Clear Pinlock Insert DKS111 madagaskar.2012(335). This Pinlock® from HJC fits the HJ-20M and HJ-20ST visors. The silicone seal on the lens creates an airtight pocket between the shield and lens.