Applicability: Suitable for 125cc, 110cc, 90cc, 50cc and other motorcycles, ensuring compatibility with PZ19 carburetors. Diameter: 1.9cm, reasonable design to ensure good cooperation with related parts. Weight: 0.14kg, lightweight design, easy to install and operate. Sturdiness: Made of sturdy materials, it can withstand long-term use and maintain stable performance. Adaptability: Suitable for a variety of driving environments and meet long-term use needs.