This is a styli for FARO® arms #A-5003-7674. These styli have been designed especially for use on FARO®portable arm CMMs. Their robust design and construction utilize Grade 5 Zirconia balls that have a high fracture toughness. The balls are bonded to the high strength tungsten carbide stem with impact resistant adhesive, and specialist construction techniques have been incorporated to ensure that the joint between the body and stem is extremely rigid and virtually indestructible.