MaggieFrame Magnetic Hoop 3.9"x12.8" | 100x320mm for KQM Hooping Stations What caused this and how

What caused this and how can I prevent it

Watch video MaggieFrame magnetic embroidery hoops are compatible with a variety of embroidery machines

Does the size stated in the product title refer to the fabric area or total hoop dimensions

These magnets ensure fabric stays perfectly taut throughout the stitching cycle on HE FENG models

MaggieFrame Magnetic Hoop 3.9"x12.8" | 100x320mm for KQM Hooping Stations What caused this and howMaggieFrame magnetic hoops embroidery are innovative tools for your KQM embroidery Machines! These embroidery hoops magnetic are designed to make embroidery easier, more efficient, and more enjoyable than ever before, offering the convenience of a reliable magnet hoop for industrial use. Packing List: 1. Hoop Main Part x 1 pcs 2. Metal Brackets x 1 pair 3. Screws & Screwdriver (Note: Brackets will be matched according to your machine brand, and need