Nurge spare screw arms for the Nurge Adjustable Needlework Frame. These multi-adjustable screw arms are used with the stretcher rods to form the Nurge adjustable Needlework frame They fit all 3 size frames. They are interchangeable so can be used with any size of Nurge stretcher bars. They are available in 3 sizes: Small (adjustable from 19cm (7 1/2″) to 28cm (11″), Medium (adjustable from 27cm (10 1/2″) to 36cm (14″), Large (adjustable from 33cm (13″) to 45cm (19″). *There are a pair of each size in the pack. Whilst the width of the fabric is restricted to the size of the stretcher bar you can use any length of fabric.