Model No ECM-355A Heavy Duty Machine with heavy duty Armature of core length of 78mm, a strong Aluminium Gear Housing, Solid and Rigid Base, a D Type Handle, Wheel Dia of 355mm & a Rated Input Power of 2400W. .Model No ECM-355C Solid and Rigid Base, a D Type Handle, Wheel Dia of 355mm & a Rated Input Power of 2400W