GD4: Supragingival Scaling. GD1: Removal of supragingival deposits in all quadrants. PD1: Periodontal Scaling. GD1 2: Supragingival Scaling. 100% Original Woodpecker DTE. Compatible with Woodpecker DTE series Ultrasonic Scalers with LED (DTE-V2 LED, DTE-V3 LED, DTE-D5 LED, DTE-D7 LED etc.).