The number of stitches per shell is changeable simply by moving the one - touch lever on the frame cap and moving the edge guide simultaneously, Any kinds of thread is usable, including woollen yarn, any kind of fabcy yarn, Suitable for light to heavy fabrics such as : sweaters, girls tops dressing sacks, overcoats, robes, socks, blankets, cushions, whenwver a shellstitch on edge is appropriate.