Spoke Reflectors 360 Degree Spoke Reflectors Visibility Coated with 3M Scotchlite Bicycle Bike Reflective Spoke Clips 36pcs Certified To British Standard: 6102/2 Road Traffic Approval and STVZO German Road Traffic Approvals. Impact Tested 300,001 Times 360 DEGREE VISIBILITY: Exceeds British Standard: 6102/2 Road Traffic Approval and STVZO German Road Approvals UNIVERSAL FITTING: Suitable for spokes between 1.8 and 2mm in diameter, Gives fantastic all round visiblity of the rider to oncoming vehicles in low light conditions HIGHEST QUALITY: Durable and solid. Be careful of copies from the Far East. Ours are tested not to come away from your spoke under impact such as bumps, potholes etc. LEADING BRAND: Coated with 3M Scotchlite Reflective Material WATERPROOF: Near hydrophobic surface with membrane lining.