Feature:1. Ideal Applications: This drum sprocket needle bearing kit is perfectly compatible for 340 345 350 351 353 440E 450E Chainsaw to accurately meet your needs.2. Durable Construction: The chainsaw sprocket replacement part is made of high quality iron material with high hardness and strength, not easy to damage, long lasting to use.3. High Accuracy Production: The cover drum sprocket is engineered for 7 teeth with high accuracy, delivering higher working efficiency and stable performance.4. Convenient Installation: drum sprocket with needle bearing is produced on the base of standard, you can directly replace your original one for time and effort saving.5. Better Replacement: This heavy duty drum assembly is highly practical, with professional manufacturing and superb craftsmanship, is an excellent replacement for original one.Specification:Item Type: Drum Sprocket with BearingMaterial: IronGear Size: Approx. 17x30mm / 0.7x1.2inProduct Size: Approx. 6.5cm / 2.6inTeeth: 7 TeethApplication: For 340 345 350 351 353 440E 450E Chainsaw Package List:1 x Drum Sprocket1 x Needle Bearing