339075B Precision Blade Balancer, balances blades after sharpening. Suitable for Stihl, Troy, etc. (42-047) Precision lawnmower blade

【Versatility】The track arm can be adjusted to any blade length. Compatible with virtually all brands of lawn mowers and trimmers. Replacement part numbers: 339075B, 42-047. Material: High-quality aluminum material is more durable than plastic cone balancers. Six large magnets strong enough to hold heavier mower blades. Static blade balancing for easy handling; fits most blade sizes. Checks for unbalanced and bent blades, balances engine vibration and wear, and ensures a smoother cut. Installation: When installing the balancer, ensure there is sufficient clearance on both sides for the blade to rotate 360 degrees without obstruction.