Prime-Line Products PL 7794 Spreader Bar Clips, 5/8-Inch, Mill,(Pack of 6) This product is manufactured in China Should Not Be Welded Spreader Bar Clip Stamped aluminum clips inserted into the ends of 5/8 spreader bars & set into a built screen frame Prevents bowing in oversized frames Clip Fits Onto Spline Channel Fits 5/8in Spreader Bar