24″ and 14″ inch Quilters Slidelock tools replace the flat standard ruler quilters use as a rotary cutting guide. Regardless of the amount of pressure quilters place on the standard flat quilting ruler with their hand, the ruler slips sideways during the rotary cutting process. Quilters Slidelock tools require minimal hand pressure on the handle to lock both tool and fabric to the cutting mat. Nothing moves. The result is perfectly straight, exact size rotary cut WOF strips and pieces.