The Petzl helmet adapter is a practical mounting solution specifically designed for attaching an ultra headlamp to a caving helmet. This adapter is made of durable plastic and weighs only 40 grams, making it lightweight and user-friendly. The front and rear mounting plates ensure a secure and stable attachment of the headlamp, guaranteeing optimal illumination in dark environments. The adapter comes in a neutral gray tone that harmoniously blends with the helmet's design. With this accessory, users can efficiently utilize their headlamp without compromising safety or comfort. The helmet adapter is an essential accessory for anyone who regularly works or explores in caves or other dark environments. It allows for easy handling and adjustment of the headlamp, keeping hands free and ensuring optimal visibility at all times.