The TruBind TB-C20A boasts a punch capacity of up to 20 sheets (20# paper) at once, which is made even easier with its full handlebar that allows for left-handed, right-handed, or two-handed operation! Its lightweight design allows it to be portable within a workspace, making the TB-C20A an excellent addition to any school or small office environment. This binding machine utilizes 19-ring plastic binding combs and binds documents up to 2" thick.