Paulus Frog ferrule for bass, … Paulus Frog ferrule for cello, nickel silver 16x8x11 mm Item No. B82202 Manufacturer Paulus bowparts Paulus Frog ferrule for viola, … Paulus Frog ferrule for cello, nickel silver 16x8x11 mm × Paulus Frog ferrule for cello, nickel silver 16x8x11 mm