This workhorse stapler brings you a solid and consistent performance. Staples up to 20 sheets when used with Swingline"s S.F. 4 premium staples. Offers the added versatility of pinning and tacking. Features a performance-driven mechanism with an inner rail for long-term stapling integrity. A positive locking latch ensures the confidence and control of a secure stapling position. Supply indicator. Solid metal construction. 4" throat depth. Channel loading of a full strip (210) of 1/4" standard staples. 100% Performance Guarantee-Guaranteed to perform at the highest standards for the life of the warranty (assuming normal product usage) or Swingline will replace the product. Manufacturer"s limited lifetime warranty. All sheet capacities are based on 20-lb. bond. Staple Capacity: 210, Full Strip, Size of Staple Used: 1/4 in.