Use the Omnigrip square rulers to cut, square and trim blocks. It's ideal for quilting, sewing and crafts - or any DIY project that calls for cut fabric.Details:Clear with neon and black markings3 rulersExtra 1/2" on two sides for seam allowanceDiagonal angle lines for triangle cutsEdge markings for accurate measuringLaser-cut edgesLeft- and right-hand numbering and angle systemDouble-sight lines visible on light and dark fabricsNon-slipAcrylicFor use with rotary cutter or straight-edge bladeSize Information:11.5" x 11.5" ruler8.5" x 8.5" ruler6.5" x 6.5" ruler