Feature: 1. P - Style clip-on balance weights use on all steel wheels up to 17in Passenger Cars & Light Trucks. 2. 30pcs/pack, each weight 40g/1.41oz and 1200g/42.33oz in total with small weight error. 3. To prevent tires from vibrating under high-speed operation, affecting the normal driving of the vehicle. 4. With this balance weight, there will be no problems such as steering wheel shake and vehicle body shake during high-speed driving. 5. The weight is compensated for the wheel with a balance weight, and the dynamic balance of the wheel is corrected by locally increasing the weight. Specification: Condition: 100% Brand New Item Type: Tire Wheel Balancing Weights Material: Aluminium Alloy Color: As Pictures Shown Weight of Single One: Approx. 40g±1.5g / 1.41oz±0.05oz Quantity: 30pcs/Pack Weight of Each Pack: Approx. 1200g±15g / 42.33oz±0.53oz Application: Use on all Alloy Wheel for Passenger Cars & Light Truck Introduction: The wheel of a car is a whole composed of tires and wheels. However, due to manufacturing reasons, the mass distribution of each part of this whole cannot be very uniform. When a car wheel rotates at a high speed, it will form a dynamic imbalance state, resulting in the phenomenon of vehicle wheel shaking and steering wheel vibration during driving. Dynamic balance refers to the asymmetric weight distribution produced by the force of the tire when it rotates, usually at a higher speed. In the tire factory, a balancing machine installed on the tires and wheels tests the wheels. The assembly is accelerated to 300 RPM or higher, and the force imbalance is measured with the tire rotation sensor. For the hook-type balance weight, the unreasonable fit clearance is also the reason for its loss during driving.. Package List: 1 x Pack of Tire Wheel Balancing Weights (30pcs, 40g/pc) Note: Professional installation is strongly recommended. Please install with professional tools.