Swingline 48204 Swingline Speed Pro 40 Flat Clinch Electric Stapler, 40 Sheet Capacity, Black Speed Pro 40 flat clinch electric stapler with 20-sheet capacity, staple storage, low staple indicator adjustable throat depth. Electric convenience, efficiency and smooth operation. Staples up to 40 sheets . Flat clinch mechanism creates neater stacks of stapled paper. Low staple indicator and built-in staple storage reduce interruptions.