These Spec Ops Heavy Duty Staples, 1/4-inch were developed for optimum performance in any Spec Ops Staple Gun. Constructed from superior quality high carbon wire to reduce buckling and jamming, these finely-honed stainless steel staples delivers maximum penetration for maximum holding power. Developed from galvanized steel, these staples are also resistant to rust. These heavy-duty staples won't snap or buckle and are the perfect accessory to any carpeting, upholstery, repair, or construction job. The leg length is an ideal 1/4” or 6mm. Each box includes 5,000 staples. With each Spec Ops Tools purchase made, we support our nation’s heroes by donating 3% of proceeds to veteran and first responder causes.