The handle on this machine is extremely well designed to be easy to use for those of both the left and right handed persuasion. This handle goes across the length of the machine, increasing the leverage and decreasing the force you need to get the job done..One of the more well known and best selling manual twin china commercial ice maker manufacturersloop closing machines in the world for a number of years, the GBC MC 12 can pretty much be considered the industry standard at this point. You can even use this diverse machine with nineteen loop spiral-o spines. This type of rugged industrial grade build virtually ensures you that this this machine will last you for years and years without you ever having to worry about any sort of breakdown or maintenance issues. The MC 12 is a tough machine, made of all heavy-duty metal, and is designed for one thing, and one thing only: to do the job of closing "C" shaped wire-o, spiral-o, double loop, twin loop, Car Freezers factory double-o and WireBind spines into working and workable documents. The dual knob system lets you not only tweak the MC12 to the right size for your particular project, but also allows for adjustments withing the same document.A versatile and rugged machine, the GBC MC 12 is probably the most widely-used wire closer on the market. This amazing machine can close everything from the smallest wires to the largest spines that a lot of other other machines on the market can't deal with.One of the reasons this machine is so widely known and used is that it is as durable as they come. It is no accident that this machine is the most popular manual wire closer in the world.When all is said and done, it's safe to say that any business that uses a modular punch and needs the ability to bind booklets with twin loop wire would be wise to consider the purchasing the MC 12. Even under the very heaviest usage, you will wear out before this machine does. It's a smooth operating machine that can be used by anyone with ease. Like we said, it's possible that you may wear out before the MC 12 does, but it has been designed to take it easy on you. It is almost a given that were you to take a peek behind the scenes at print and copy stores, professional binders, and larger self-publishing companies, you would more often than not find that they are using the MC 12 to do their wire closing. Here's why. There are two metal adjustment knobs that you use to set the closing distance. This machine is also truly simple to use. As such, the MC12 is the perfect partner for your binding and punching system, whether manual or automated, that binds in any of these styles or that features an interchangeable die system.The MC 12 works with all and every wire size of wire size out there, from the smaller 3:1 pitch wire to the largest 2:1 pitch double loop spines.As previously noted, the MC 12 is built to last, and is constructed of all steel components