【About the Product】 ・Excerpt from Amazon Daytona Motorcycle U-Lock, Difficult to Cut, Keyhole Shutter, LED Light-equipped Key, 1 Included, Stronger U-Lock W154/H220mm 79017 (From the Amazon purchase page) 【Application】Motorcycle U-Lock 【Specifications 1】Extra-thick Φ16mm round steel material, 7-disc cylinder key resistant to picking 【Specifications 2】Cushion rubber wrapping to prevent wheel scratches 【Specifications 3】Key has an LED light, useful for locking at night 【Reference Compatible Tire Sizes】160/60-17, 180/55-17, 190/55-17 ● Protect your precious motorcycle with a sturdy body and thick shackle lock! A U-lock packed with features to prevent theft. ● Peace of mind with its thickness! 16mm round steel adopted. Wrapped with cushion rubber to prevent scratches on the wheel. ● Available in 3 sizes to choose from according to tire size. By eliminating the gap between the tire and the U-lock, mischief can be deterred. ● Uses a 7-disc cylinder key resistant to picking. The main key has a convenient LED light for nighttime use, and the keyhole has a shutter to protect it from rain and dust! ● The shackle insertion points are designed to be difficult to remove by connecting at two points. ● Reference tire sizes: 160/60-17, 180/55-17, 190/55-17 【Frequency of Use, etc.】 ・Purchased in February 2023, used only about once. ・There are some rust and scratches because it was kept in a locker in an apartment. (See photos)