The TruBind TB-W20A features a punch capacity of up to 20 sheets (20# paper) at a time, made easier by a full-handle that allows for left-handed, right-handed, or two-handed operation! Its lightweight design allows it to be carried within your workspace, making the TB-W20A an excellent addition to any school or small office environment. This binding machine uses 3:1 pitch double-loop wire binding spines and binds documents up to 1/2" thick (with 9/16" diameter spines). Features Brand Name: TRUBIND Item Weight: 18 pounds Product Dimensions: 17 x 8 x 14 inches Item Model Number: TB-W20A Number of Items: 1 Manufacturer Part Number: TB-W20A Manual punching and binding operations (3:1 pitch) Full set of disengagement dies Punching capacity: 20 sheets (20 lb. paper) Max. Sheet Size: A4