HMS: Heavy Alloy Modular Shanks
Features: Screw-in, through coolant, Excellent toughness, more forgiving with reduced fracture rates. Anti-vibration.
Applications: Ideal for Roughing and semi-finishing applications, and for use in lower speed machining. Adopted to ISO modular heads.

CMS: Carbide Modular Shanks
Features: Screw-in, through coolant, Excellent rigidity, and anti-vibration.
Applications: Ideal for semi-finishing and finishing applications, and High Speed machining. Adopted to ISO modular heads.