Made from a heat resistant, high impact material (PC 2805) this simple and effective signalling device is a must have item for all Fenix torch owners. Easy to fit and remove. Compatible with Fenix LD and PD-Series Flashlights. Made from PC 2805 plastic created by Bayer Material Science AG, high quality guarantee. Anti-impact and anti-heat, super durable, can be used in bulletproof applications. Length: 180mm (length of the head is 30mm and length of the main body is 150mm. Diameter of the head is 39.5mm.) Compatible with flashlights with 34mm diameter. Easy to attach, easy to remove.