Superior IBA10T Buttonhole Attachment up to 1" for Screw On High Shank Presser Bar Straight Stitch Sewing Machines, Needle Bar Clamp Barrel Extension

**Does not work on high speed, auto oil, single needle straight stitch machines with power stands like Juki, Brother, Consew, Reliable, etc. The speed is to high and there is generally no needle bar clamp extension for the forked articulating arm to operate from.