5 X Plastic Worm Gear for 2 mm Shafts - 10 mm L - 6 mm OD - 1.9 mm ID for 2.0 mm Shafts    

• Plastic worm gear   
• You will receive 5 gears                     
• Dimensions: 6 mm diameter x 10 mm thick            
• Inside diameter: 1.9 mm provides for a tight fit on 2.0 mm shafts