●office Heavy Duty Stapler 100 Sheets ,metal stapler for desk ●Here is the proper stapling capacity for your reference. 23/6 (1/4 inch) for 10-25 sheets, 23/8 (1/3 inch) for 25-50 sheets, 23/10 (3/8 inch) for 40-70 sheets, 23/13 (1/2 inch) for 60-100 sheets,thick stapler ●Frustration free design with easy to apply stapler slot in the rear of stapler and simple construction that is designed to prevent jamming. ●All metal design for increased durability in tough office environments ●Please refer to the instructions on the product page. We offer an 18-month worry-free warranty and friendly customer service.