20 Gauge x 1 In. x 3/16 In. crown staple is designed for use on a variety of applications including the nailing of 1/4 In., 5/16 In., 3/8 In. and 7/16 In. In. hardwood and engineered flooring. Galvanized to resist corrosion this fastener will keep your floor in place. This staple will perform well with Porta-Nails 475 Twin Trigger and with other Floor Staplers or Underlayment Staplers requiring a 20 Gauge or 97 wire size 3/16 In. crown staple. Packed 5000 to the carton and will cover approximately 1500 square feet when installing 3-1/2 In. width flooring. Refer to the floors installation guidelines for proper fastener schedule. PNI's Quality System is ISO 9001-2000 Registered.