Engineered for impressive performance, PowerCrown staples feature a unique crown at the top of the staple that flattens when driven down during stapling. Forced outward, the legs are better supported by the stapler magazine throughout the drive, resulting in more stapling force and reduced staple buckling. Staples are made from superior-quality, high carbon steel wire with finely chiseled points for maximum sheet capacity. Use in Bostitch EZ Squeeze 50 (B850-BLK), B8 PowerCrown Flat Clinch Premium (B8RC-FC), B8 PowerCrown Compact Premium (B8RC-2G), B8 PowerCrown Travel/Desktop (B8RC), B8 Impulse 45 Electric (B8E-VALUE) for 20-sheet jobs, B8 Xtreme Duty Plier (B8HDP) for 20-sheet jobs and B8 Heavy-duty Plier (02245) for 20-sheet jobs.