This is a permanent item that will not loosen over time. It is commonly used in the high shank, single-needle home, and industrial sewing machines.DURABLE AND LONG LASTING: Made of steel and do not . The high durable characteristic makes this Screw Clamp able to long-lasting. 1/3/5pcs Presser Foot Easy Change Screw ClampIf you have a high shank machine and your quilt then you can’t live without this because the switching between your stand foot and quilt foot gets pretty without itIT'S SO EASY TO USE: Even for beginners. Just attach to the machine and it's good and ready to help change the footer easily.This Item replaces the Thumb Screw that holds the Presser Foot. It allows for an instant, quick change of Presser Feet without using a screwdriver. With Presser Foot Easy Change Screw Clamp, you can change afoot within 2 seconds, don't need a screwdriver!Hard to change the presser foot?FITS MOST INDUSTRIAL AND HOME FLAT SEWING MACHINES.