The 1/4” staples are compatible with the Spec Ops M8 and M8E Plier Staplers. These staples were manufactured to be medium-duty with a crowned design for maximum drive. They’re perfect for everyday use in any industrial setting such as pharmacies, florists, dry cleaners, mailrooms, warehouses, and more. They’re constructed with a high-quality carbon steel wire for sturdiness and offer a finely-honed chisel point for maximum penetration. With each Spec Ops Tools purchase made, we support our nation’s heroes by donating 3% of proceeds to veteran and first responder causes.