The motorcycle semi-automatic control lock is not suitable for modified brake and clutch handles! The motorcycle parking brake switch allows you to free your hands when waiting at a traffic light. It can help you reduce pressure for a longer period when parking on a slope and save your effort. Easy to install and use, it is suitable for most motorcycle brake levers. Please confirm that this product is suitable for your motorcycle when placing an order. (If your motorcycle brake lever has been modified (not original), it may be that after installing this product, you need to adjust the speed of your new brake lever at any time. If you mind, please do not buy it, thank you.) If your motorcycle is parked on a slope, it is very dangerous, as your motorcycle will automatically roll down the slope when parked on a slope, which can cause the motorcycle to overturn and damage the body and other parts. But if you install the brake assistant, it is very easy and safe to park your motorcycle on a slope. At the same time, you can also use it when waiting for a traffic light at an intersection, which relieves your hands. Suitable: For NMAX 155 For NMAX 125 For XMAX 400 For XMAX 300 For XMAX 250 For XMAX 125 For NSS 750/FORZA 750 For NSS 350/FORZA 350 For NSS 300/FORZA 300 For NSS 250/FORZA 250 For NSS 125/FORZA 125 -Products can be installed and used without modification, easy to install, no installation instructions. -Anodized, not easy to fade and rust. -Fashion design appearance, excellent technology is better suited for your bike. -Please allow 1-3MM difference due to manual measurement. -If you have any questions when purchasing this product, please feel free to contact me. *For most motorcycles (for Kawasaki Suzuki Yamaha Honda Ducati ect.) (Please check the hole size of your motorcycle's mounting position before purchasing and compare with the product size in the picture, thank you)