Petzl Accessory For Mounting A Duo Headlamp On A Sirocco HelmetAccessory for mounting a DUO headlamp on a SIROCCO helmetSIROCCO ADAPT consists of two removable plates, one front and one rear, for mounting on a SIROCCO helmet. They ensure compatibility with DUO S and DUO Z2 headlamps. *It is composed of two removable pieces that can be inserted in the ventilation holes of the SIROCCO helmet and secured with the elastic *Allows easy mounting of a DUO S or DUO Z2 headlamp, and maintains the headlamp\'s tilting capabilitySpecifications *Weight: 35 g