AWE&reg; AWEBrightTM 3M Scotchlite 6cm 360&ordm; Protection Reflective Spoke Clips 36pcs Conforms To BS 6102/2,TUV and StVZO German Road Traffic Approvals FREE 5 Year Guarantee! 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 6cm Long, Click on and Highly Secure, UK Brand Tested in Germany manufactured by German Knowhow... 3M Scotchlite, Aesthetic, silver grey look because of microscopic glass bubbles, coated with aluminium Durable solid support, BEWARE Of Non Road Conforming Copies which can drop off or jam in brakes when wheel is impacted on potholes Etc... TUV Tested to 200,000 Impacts @ 8km/h, 100,000 Impacts @ 12km/h Clips Remain Totaly Fixed