"For optimal stapling performance in select Swingline staplers. Use with Swingline Optima™ high-capacity sheet-count staplers. Features stronger wire for easier piercing and less jamming, even at high sheet counts. Staple Type: Optima™ High-Capacity; For Use With: Swingline 77701, 77715, 87875, 48210; Leg Length: 3/8""; Sheet Capacity: 70. Color: Silver."