· 3/8" Crown, Series 71, 22 gauge· Highest Quality for Industrial and Commercial use.· Interchangable with: BA71, JK 670, Senco C, Astro 72, Empire 7, Fasco EE7xx, Prebeba V, Rainco 7, Spotnails 87· Fast stapling, without jamming.· Designed for high speed Air Powered (Pneumatic) Staple Guns