Replacement part The Streamlight Sidewinder rail helmet mount is the perfect way to mount your Sidwinder illumination device to your helmet. The durable polymer construction clamps straight to your standardized mount, and offers many options for mounting you light.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Stockable: Y Country Of Origin: US