Features: 1, Use AC220V high-standard electromotor as motivation. 2, Portable type, driven by imported motor: Located by inner expansion device 3, Automatically centering: Applicable for types V. U beveling process for different materials.Model ISY-28 ISY-80 ISY-150 ISY-251-1 ISY-250-2 ISY-351-1 ISY-351-2 ISY-630-1 Cutting range Φ 16-28 Φ 28-80 Φ 65-190 Φ 80-273 Φ80-273 Φ 150-351 Φ 150-351 Φ 300-630