[High quality]Made of high quality whetstone and steel, strong and durable, not easy to wear, not easy to deform, and can be used for a long time [Rotary balance] The sharpener has a perfect rotary balance design, which can sharpen the blade easily and quickly, saving time and energy [Easy to use] The grinding angle is 20 degrees, can sharpen sharp edges. The blade balancer can quickly test the balance of the blade, to ensure the sharpness [Size] 5 x 4.7cm, suitable for most electric drills, balancer size: 5.5 x 6 cm, comes with 6 sharpeners and a balancer to cope with more grinding tasks [Applicable] Perfect for sharpening lawn blade, drill blade, mower, sickle bar cutter, tillers, hoe, etc. Specifications: Lawn Mower Blade Sharpener: < p>Material: Corundum Size: 5 x 4.7 cm Color: blue Lawnmower blade balancer: < p>Material: Plastic Size: 5.5 x 6 cm Color: Black Package Included: 6 x Lawn Mower Blade Sharpener 1 x Lawn Mower Blade Balancer