While many small needlecraft & cross stitch projects can be stitched by just holding the canvas in your lap, using an embroidery hoop or frame to hold the work area tight for stitching can make the sewing work go more smoothly & easily. Mounting the canvas or fabric on a frame that holds the work area tight for stitching can be helpful in a number of ways: A taut fabric makes stitches easier to see & count. When the fabric is taut, stitches are more even, with more uniform tension on the yarn, which greatly reduces the need to block the project once it's completed to straighten distorted areas. Fabric on a frame needs less handling, so there is less wear & tear on the thread & the project stays clean even if it's worked on over months & years. This unique ratchet frame is a new type of scroll frame that consists of two split end rails & two side pieces with ratcheted rollers that move both ways. The canvas is snapped between the two end rails & rolled back & forth on the rollers. Size: 9" x 18" (22.9 x 45.7cm).