Stanley bostitch heavy duty three-hole punch, 160 sheet capacity, black extremely thick or high volume punching projects call for our antimicrobial xtreme duty adjustable hole punch. Its precision ground hollow steel punch heads deliver clean punching of up to an amazing 160 sheets of 20 lb paper. The innovative high leverage design reduces the effort required making for easy punching of your thickest documents, catalogs or magazines. for added versatility, the adjustable punch head design allows for an easy conversion between standard 2 and 3-hole punch configurations. You can easily accommodate various sized documents with a simple adjustment of the adjustable paper guide. The high quality antimicrobial protected all metal construction ensures a lifetime of precision performance and durability. The easy clean chip tray keeps your work area clean and the rubber base pads keep the punch in place during use while protecting delicate desktop surfaces. When not in use, simply lock the handle down with the handle lock and store out of sight in a desk drawer. this product arrives to most customers in 2-3 business days.