With 12 Mm Slot - Complete Debarker Without Bell - Suitable For The Rapid Removal Of Oxides, Calamine, Paints, Salt, Grease, Protective Waxes. Leaves The Satin Effect. Adaptable To All Petrol-driven Chainsaws Available On The Market. Arm Indications: Select The Debarker Arm Referring To The Diameter Of The Chainsaw Fixing Bar Studs. The Diameter Must Correspond To The Width Of The Debarker Arm Fixing Slot. Attention: To Work, The Barker Must Be Combined With The Bell With A Pulley Suitable For The Chainsaw, Therefore Always Indicate The Type And Model Of The Chainsaw On Which To Install The Barker.