The Cat Eye rear saddle light has a convenient but horribly flawed design. While it's easy to snap in and take out, I've found this light popping out so often it's a
Cateye RM-1 Rear Saddle Seat Rail Mount Bracket Black Bicycle Bike Cycle Light | eBay
Cateye SR-2 Fizik Saddle Rail Rear Bike Light Bracket Mount Black 2 Pcs | eBay
CatEye CA5446510 RM-1 Rear Saddle Mount Bracket Cycling Lights and Reflectors, Black : Amazon.co.uk: Sports & Outdoors
Cateye Volt 50 Rear Light with Saddle Rail Mount | Sigma Sports
CatEye spare part | Rear Saddle Rail Mount Bracket
CatEye Fizik Bracket : Amazon.co.uk: Electronics & Photo
CatEye spare part | Rear Saddle Rail Mount Bracket