Super Heavy Duty Loop Fasteners #10577.
1.5" SHD Loop Fastener (3" Overall Length). Avery SHD Fasteners are 4X stronger than standard fasteners because they are made from the strongest grade commercial nylon.
Unlike T-End fasteners, both ends of the fastener are consecutively fired through the tool so they anchor at two different points while the filament serves as the loop.
Compatible with SHD Pistol-Grip Tool #10637 and SHD replacement needles.
25 fasteners per clip, 5000 per box.