3HP/2.1Kw : Power 3HP/2.1KwConnection type: Collet ER25Rated voltage: 220VRated speed: 18.000 rpmMax speed: 18.000rpm4HP/3.0Kw : Power: 4Hp/3KwConnection type: Collet ER25Rated voltage: 220VRated speed: 18.000 rpmMax speed: 18,000rpm