The DS-Twist is a professional reciprocating handpiece with internal water cooling, ISO attachment, and an interchangeable push-button head, designed for precise interproximal and finishing procedures. Engineered for controlled performance, the DS-Twist delivers smooth back-and-forward reciprocating movement for strips and finishing instruments. The standard DS-Twist operates with a 4:1 ratio and a 0.9 mm stroke, while the DS-Twist 40 version is available with a 6:1 ratio. The system is compatible with Ø 2.35 mm instruments and is designed for comfortable, silent, and vibration-free handling in orthodontic, aligner, lingual, and restorative procedures. Key Clinical Features • Reciprocating handpiece with back-and-forward movement• Interchangeable push-button head• Internal water cooling• ISO attachment• Compatible with Ø 2.35 mm instruments• Standard DS-Twist ratio: 4:1• DS-Twist 40 ratio: 6:1• Stroke length: 0.9 mm• Ideal speed: max 25,000 rpm for DS-Twist • Designed for comfortable, silent, and vibration-free operation Clinical Applications • Interproximal reduction (IPR)• Orthodontic procedures• Finishing and polishing• Restorative dentistry• Prophylaxis and veneer preparation