Powerhouse drives through up to 200 sheets with a single staple. Features extra throat depth and adjustable paper stopper for precision stapling. Nonskid base and grip handle offer secure, comfortable operation. Metal and plastic. Rear loads heavy-duty staples. Stapler Type: Heavy-Duty Desktop; Staple Capacity: N/A; Size of Staple Used: N/A; Type of Staple Used: N/A.