Aero Sport ReflectaClipTM 36pcs x 8cm 360&ordm; Coated with 3M Scotchlite Conforms To BS 6102/2,TUV and StVZO German Road Traffic Approvals, TUV Certified FREE 5 Year Guarantee! The Original and Best, TUV Approved, 360 Degree Visibility, Exceeds British Standard: 6102/2 Road Traffic Approval and StVZO German Road Approvals Suitable for Spoke between 1.8 and 2 mm in diameter, Gives fantastic all round Cyclist visiblity to oncoming vehicles at Night Durable solid support, BEWARE Of Non Road Conforming Copies which can drop off or jam in brakes when wheel is impacted on potholes Etc... 3M Scotchlite, Aesthetic, silver grey look because of microscopic glass bubbles, coated with aluminium TUV Tested to 200,000 Impacts @ 8km/h, 100,000 Impacts @ 12km/h Clips Remain Totaly Fixed.8cm Long, Click on and Highly Secure, UK Brand Tested in Germany manufactured by German Knowhow...