Regular head replacement perpetuates the new, fresh-out-of-the-box performance of your Swingline? paper punch. Precision spring system and barrel setting ensure a firm, smooth piston action. Snap-in-design simplifies installation. Accessory Type: Replacement Punch Head; Hole Diameter: 9/32 in; Number of Holes Punched: N/A; For Use With: Swingline A7074020 Commercial Desktop; A7074023 Accented Desktop; A7074027 7-Hole Desktop Punches (SWI74020, SWI74023, SWI74027).