The Lezyne Classic Brass Bell Hard Mount attaches to your handlebar with a robust machined aluminum handlebar mount. The bell dome and striker are crafted from high quality brass with a sturdy stainless steel spring. Its secure base quickly mounts to most modern bicycle handlebars (25.4 mm or 22.2 mm diameter) with a stainless steel Torx bolt. And it’s narrow design attaches neatly between other handlebar accessories. It provides a powerful ring that’s excellent for all cyclists and commuters alike. This bell is engineered to be extremely durable with excellent resistance to weather related wear-and-tear. This lightweight and stylish ringer is the ultimate bicycle bell. Lezyne Classic Brass Bell Hard Mount Specifications Mount Size: 22.2 - 25.4mm Weight: 34g