Make heavy-duty stapling jobs 70 percent easier with Two-Finger technology by PaperPro. Using only two fingers, staple up to 60 sheets of paper - jam-free. Durable, lightweight design is compact enough for portable desktop performance. Nonslip base protects tabletops while providing extra stability during frequent operation. For immediate use, the Bostitch-PaperPro Spring-Powered Heavy Duty Stapler includes 500 5/16" staples (5 to 30 sheets) and 500 3/8" staples (10 to 60 sheets). It uses Bostitch 3/8" Heavy-Duty Premium Staples.