AntiJam Extra Heavy-duty Stapler features an antimicrobial compound that safely reduces the growth of bacteria. Offers an all-metal construction for extra heavy-duty use. Staples up to 215 sheets of bond paper. Adjustable throat depth is 2-3/4". Heavy-duty stapler features an adjustable paper stop with Imperial and metric rulers, easy rear staple loading and rubber base pads to protect the work surface. Uses Bostitch SB35 Heavy-duty staples in 1/4", 3/8", 1/2", 5/8", 13/16" and 15/16" leg lengths. Requires different staple sizes based on capacity.