1Prevent the dynamic unbalance of wheels, avoid wheel shaking and steering wheel vibration during driving. 2P-style for use on all steel wheels up to 17in passenger car and light trucks. 3Make the car safe from trembling at high speed, reduce driver fatigue and accident rate. 4Not easy to overshoot, lengthen the tyre life, and makes the suspension parts not easily damaged. 5Package of 100pcs, which can completely meet your needs, practical to use.100 x Wheel Balance Blocks1 x Wheel Weight Balance PliersCondition: 100% Brand New_x000D_Item Type: Clip-On Wheel Weight_x000D_Material: Aluminum Alloy_x000D_Color: As picture shown_x000D_Optional Type: With Wheel Balance Pliers, Without Wheel Balance Pliers_x000D_Balance Blocks:_x000D_Single Weight: Approx. 20g 1g/0.71 0.04oz_x000D_Quantity: 100pcs_x000D_Weight Per Bag: Approx. 2000 20g/70.5 0.88oz_x000D_Balance Pliers Length: Approx. 24cm/9.4in (The Plier is Optional)_x000D_Applicable Car Wheel: Use on all Alloy Wheel for Passenger Car & Light Truck_x000D__x000D_Instruction:_x000D_1. 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 phenomenons of vehicle wheel shaking and steering wheel vibration during driving. Dynamic balance refers to the asymmetric weight distribution generated 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._x000D_2. For the hook type balance weight, the unreasonable fit clearance is also the cause of the loss during driving. 1Prevent the dynamic unbalance of wheels, avoid wheel shaking and steering wheel vibration during driving. 2P-style for use on all steel wheels up to 17in passenger car and light trucks. 3Make the car safe from trembling at high speed, reduce driver fatigue and accident rate. 4Not easy to overshoot, lengthen the tyre life, and makes the suspension parts not easily damaged. 5Package of 100pcs, which can completely meet your needs, practical to use.100 x Wheel Balance Blocks1 x Wheel Weight Balance Pliers