These Narrow Tapered Bands are perfect for machine or hand setting, as well as for putting a head on the top, or simply cutting a design into it.  The Standard version of these are at its widest for the first half of the ring , and then gradually get narrower as it reaches the bottom.   This allows you to set the same size stones halfway around the blank ,and by Kemp pre-cutting the metal out for you, you save time and money.