• Reciprocating Motion: Instead of full rotation, it oscillates (moves back and forth) just like a manual hand-filing technique.

• Universal File Compatibility: Equipped with a specialized chuck that holds standard ISO Hand Files (K-Files, H-Files) rather than rotary-only files.

• Reduction Gear Ratio: The 10:1 ratio provides high torque and controlled speed for safety inside the canal.

• E-Type Connection: Compatible with any standard electric or air-driven low-speed motor.

• Autoclavable: Designed to withstand high-pressure steam sterilization.

The M4 is a specialized endodontic contra-angle designed to mimic the manual motion of hand filing. It allows clinicians to use standard hand files with a motor, significantly reducing hand fatigue during canal enlargement.

• 1 x M4 Style Contra Angle Handpiece

• 1 x Oil Nozzle (for lubrication)

• 1 x Instruction Manual

• Note: Hand files are usually sold separately.

• Attachment: Connect the M4 handpiece to your E-type low-speed motor (Air or Electric).

• File Insertion: Press the push-button (or slide the chuck) and insert the handle of a standard stainless steel hand file. Ensure it is locked.

• Operation: Use light apical pressure. The handpiece will provide the "watch-winding" motion automatically.

• Cleaning: After every use, remove the file and clean the external surface with a disinfectant wipe.

• Lubrication: Use dental handpiece oil through the rear intake before every autoclave cycle.

• Safety Tip: This handpiece is excellent for finding the "glide path" in calcified canals where rotary files might break.

• Sterilization: Can be autoclaved at 135°C (275°F). Always lubricate before autoclaving to protect the internal gears.