A  Versatile Binding Machine for all your office work-bind all your documents;projects,tender documents, easily and fast.This durable and affordable binder is a requisite addition to your office equipment accessories.you need a professional machine to improve binding efficiency! How about this 21-Hole 450 Sheets Paper Comb Punch Binder Binding Machine Scrapbook. Premium ABS plastic and metal material greatly ensures its high quality and durability. Broaden metal base makes this binding machine stable and resistant to use. It is built with a handle for comfortable grip and easy operation. This binding machine is featured with adjustable margin for meeting your actual need. Comb Spiral Binding Machine A4 is the best easy and high quality binding machine. This binder is efficient and reliable binding machine for your business.It is easy to add or deduct pages from already bound documents and has  an Adjustable margin depth.It can select A4 or A5 paper format, Punches 21 holes, each 3 x 8mm in size.It has a Punch Capacity of  12 sheets and a Binding Capacity of 450 sheets.