We make extra work pieces to confirm the accuracy and precision of the bar joinery during the milling process of every order. Eventually we end up with a series of test bars which we put together into complete stretcher sets and offer at a discounted cost. All of our Overstock stretchers meet our milling and straightness tolerances but may have minor cosmetic flaws, such as small scratches or small, sound knots. All Overstock stretchers are shipped as disassembled bars via UPS.