Virtually eliminates thinning Four special baffles accomodate most seed sizes Precise, even sowing of all sized seeds is fast and convenient The unique vibrating action of the speical wheel causes seeds to flow down the anti-static "V" channel and through the baffle in controlled action for careful sowing. Even The tiniest seeds can be sown with precision. "No clumping. Maintenance free. Easy to operate." So easy in fact its as simple as 1-2-3! 1. Select the correct baffle size for seeds to be sown (chart included). Snap into place. 2. Pour seeds into the tool behind the baffle. Tilt the trowel at a slight downward angle. 3. Rotate the wheel lightly with thumb. Stronger thumb pressure on the wheel causes vibrating action to increase.