1、ELIMINATE GAP: Gap decreases the efficiency of the impeller ability to propel the snow up the chute resulting in less throwing distance, and the easy and quick, inexpensive fix is to modify the impeller blades by adding a strip of reinforced rubber to each one of them to eliminate this gap 2、FUNCTION AND NECESSITY: It is highly recommended that you install a snow blower impeller kit on each blade, because only modifying some but not all of the blades will cause a harmonic imbalance in the spinning impeller which could easily cause excessive wear on the impeller shaft bearing resulting in very costly repairs 3、SUITABLE SIZE: If you have a single stage snow blower, or your gap is less than 1/4in or greater than 5/8in, you probably don't need or can't use this fix 4、AVOID CLOG: Install this snow blower impeller kit onto your two stage snow blower and never fear another snow fall again. Virtually eliminate the clogged chute syndrome when moving wet or heavy snow 5、EASY INSTALLATION: Depending on how handy you are, this kit can be installed in 1‑2 hours without too much difficulty Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.