23 gauge galvanized and coated headless pins, Designed to use with P630, P635, P645, P645L, P650 and P650L Grex pinner, Precision drawn wire assures consistent accurate pin optimized tensile strength for each pin length, Durable yet flexible collation minimizes strip fragmentation, measures 1 Inches Length; 23 gauge galvanized and coated headless pins are designed to use with P630, P635, P645, P645L, P650 and P650L Grex pinner, Precision drawn wire guarantees consistent accurate pins, Optimized tensile strength for each pin length, fastener measures 1 inches Length