High Quality Material: Crafted from lightweight yet durable aluminum alloy, this blade sharpener for lawn mower offers exceptional wear and corrosion resistance. Lightweight and compact, easy to carry to different work sites Stable & Smooth Operation: The lawnmower blade sharpening tool's guide arm is designed with ball bearing for smooth movement. 4 holder bars securely hold the blade, and the 25mm diameter enlarged handle offers better grip stability, less hand fatigue Precise Blade Balancing: After sharpening, you can use the included lawn mower blade balancer to ensure your blades are properly balanced, reducing vibration and engine wear for a smoother, more efficient mowing experience. Featuring 6 strong magnets and made from high-quality aluminum, it is stable and durable 15° - 45° Adjustable Angle: The adjustment knob and clear angle scale allow you to easily set the sharpening angle from 15° to 45°, achieving precise blade sharpening with customizable angles for optimal mowing performance Wide Compatibility: VEVOR lawn mower blade sharpener comes with 4 different adapter pins, compatible with various angle grinders. It fits blades up to 30 inches (762 mm) in length, 0.28 inches (7 mm) in thickness, and 2.76 to 5.51 inches (70 to 140 mm) in width. (Angle Grinder Not Included)