icengineworks 3000FE Full Exhaust Series HDPE Tube Cutting Spacers allow for precision cutting of 3" U and J bends during Stage II of the icengineworks exhaust fabrication process. Use these HDPE spacers in conjunction with the PIV1002 Radial Cut Plate to align your bend centers to the blade path of your vertical band saw perfectly each time, resulting in accurate square cuts, perpedicular to the tangent every time. Available for each CLR or as a complete set.