To make a nice curve on a bowl, the curve needs to be cut in one smooth pass. On medium to large sized bowls you need a curved toolrest to do this. The ONEWAY curved toolrest is gently curved to help bowl turning from the first green turning to final finish cut. Made from stainless steel it will not rust and last a lifetime. The blade is 9" long, the post is 1"diameter, 3" long, and the overall height is 4 1/4".