All sets include the basic 68mm or 88mm diameter aluminum alloy cutterhead and seven pairs of interchangeable profile knives. Also included is a custom hardwood storage box, hex key and color poster showing many of the different available knife profiles. Look over the following pages for a full line of aluminum and steel cutter heads in 3/4," 1," 1-1/4" And 30mm bores, a wide array of additional knives, bushings for 1/2" And 3/4" Diameter arbors, and empty hardwood storage boxes, #SCS-1004, (D) diameter: 88mm (3-D/2), (D) bore: 1-1/4, (B) Cutting height: 40mm (1-1/2), Ideal RPM: 7000/9000scs-1004 multi-piece profile Pro 88mm DIA x 40mm x 1-1/4 bore starter set