Revolving head knurling tool with double knurl and self-centering head for manual lathes.  Includes one set each of Coarse, Medium and Fine pitch diagonal (BL and BR) pattern knurls to produce a 30° diamond pattern on your part.

Size of Holder: 5/8 W x 1-3/8 H x 7-1/2" L

Knurl Dimensions: 3/4 x 3/8 x 1/4"