Is The Professional Version Of The Established Super Joker. The Constructive And Ergonomic Improvements Improve The Production Standard. The Newly Designed Chain Fixing Clamp Ensures A Tight Tightening Of Any Type Of Chain, From 1/4 "to 3/4" Pitch. The Arm Can Be Locked In A High Position By A Specific Safety Button. The New Boom Lift Spring Is Resized In Specific Material To Ensure Its Return Without Weighing Down The Operator's Effort. Indispensable In Workshops For Professional Sharpening. Single-phase Motor 230 V - 50 Hz - Power: 220 W - Rpm : 2800 Min-1 - Weight: 6 Kg