Staplers and hammer tackers are designed for professional use. Durable all steel or aluminium construction. Nickel plated finish resists corrosion. Low staple viewing window. Handle lock allows compact storage. Designed for use with JET staplers or any brand using Arrow® T-50 or JT-21 staples. 1000 staples per box. Available in various lengths from 1/4 to 9/16 inch. Available for standard duty and heavy duty applications.