Cavitron FSI Focused Spray 30K FSI-10 insert dark blue. Eliminates calculus and dental biofilm. Provides effective lavage for an optimal clean. Better visual range. Prevents slippage during procedures. Dentsply Cavitron FSI Powerline is an ultrasonic insert that is used in the maximum removal of light to moderate dental plaque and tartar, especially with its Focused Spray system for superb irrigation. This instrument features a thinner tip that ensures increased access and visibility while scaling.Built with a textured handle, this insert offers grip stability while guaranteeing consistent tactile sensitivity. Cavitron FSI Powerline is used in conjunction with the magnetostrictive ultrasonic scaler units and runs at low to high power levels with its Powerline technology.