Large Fly Cutter 5-12", w/ R8 Collet & APKT Carbide and PCD Inserts for Aluminum
R8 Arbor: Made fromchromium-molybdenum steel, known for its toughness and wear resistance, hardened to HRC50-55 for long-lasting durability. 1 x R8 Arbor. Other inserts that start with code AP, rhombus shaped, may be interchangeable.