Punches 18 sheets at a time and will bind and insert up to 20mm. Sizes over this up to 50mm are available but must be inserted by hand. Robust and reliable with very neat ‘Cut & Crimp’ lever that does what it says it will do and cuts the coil and crimps the ends over to prevent uncoiling. Uses purpose profiled ‘Oval’ punch pins so the coil can expand a little without causing friction and difficult insertion. This machine is manual to start with but can be easily upgraded to Electric my the purchase of the motor drive unit. So you can test the water first before committing to an electric machine