MPN: 90119. Item model number: ‎90119. Manufacturer Part Number: ‎90119. The K1 stapler by Rapid is the original classic. Still made with all steel construction, and still made in Sweden. Use standard 1/4″ staples (Rapid Item 73782) for 2 – 20 sheets or high capacity 5/16″ staples (Rapid Item 90003) for 20 – 50 sheets.