This foot will double turn the fabric edge while you either straight stitch or zigzag it.  
zigzag stitch will give it a slight scallop edge.  Designed to be used with light- medium weight fabrics. size 3mm
 
VA is for modern machines and BMF is for older machines 20 years +
 
We don't keep all BMF in stock these will be a special order with a slightly longer shipping time