Nightstick European MSA Fire & SAR Helmet Rotating Mount Glass-filled Nylon Polymer Black. The NS-HMC8B slides into the holder slot and is held securely in place with an adjustable Allen screw (wrench included). The light ratchets up and down 45-degrees for ideal light placement. Specifications for Nightstick European MSA Fire & SAR Helmet Rotating Mount: Manufacturer: Nightstick Fabric/Material: Glass-Filled Nylon Polymer Color: Black Flashlight Model: Nightstick NSP-2420 Series Nightstick XPP-5418 Series Length: 1.4 in Weight: 0.4 oz Water Resistance Level: IPX-7 Features of Nightstick European MSA Fire & SAR Helmet Rotating Mount Designed for both European MSA Fire and Search & Rescue (SAR) helmets Snap in rotating mount for XPP-5418 Series and NSP-2420 Series lights 45-degree up and down rotation for ideal light placement Quick removal feature allows hand-held use when needed Package Contents: Nightstick European MSA Fire & SAR Helmet Rotating Mount Nightstick NS-HMC8B: European MSA Fire & SAR Helmet Rotating Mount Glass-filled Nylon Polymer Black