You may need to remove the tub from your Whirlpool or Sears Kenmore washing machine for some repairs. You will need a special spanner wrench. They can be ordered for about $14 US plus shipping. I needed one immediately and decided to make my own. The photo shows the tub nut on the drive block. Both are shown removed from our direct drive washing machine. The nut is inside the tub and under the agitator. Space is limited by the sides of the tub to about ten inches between the nut and the side of the tub. The nut is also a few inches below the top of the tub. It is difficult to access with anything but a spanner wrench designed for the job.