Used to help control and train fabrics such as folds and pleats in polyester or faux silk fabrics. Fastener is so small it s less visible in fabrics and easy to pull off. The micro basting/tacking is the smallest in the industry and will leave the smallest hole in the fabric. 22-ST35 Micro Basting/Tacking Gun is used for applying ST36 micro fasteners only. Not for Tamper resistant application. Easy to replace needles. Use 22-ST35/A needles only. 22-ST36 Micro Basting/Tacking Fasteners have 120 fasteners per strip, 3/16 long with 1/8 cross bar.