Allstar Performance 1/4" x .035" Round Chromoly Tubing - 4 Ft. 205007 The holders have a 5/8"

The holders have a 5/8" male RH thread and a 3/8" hole

Right Hand Thread

1959-1971 Chrysler Imperial

Available in sizes to fit most all drivers

12 Point Head

Allstar Performance 1/4" x .035" Round Chromoly Tubing - 4 Ft. 205007 The holders have a 5/8"Sold only in pre cut lengths. Always check wall thickness tolerance before cutting or welding, especially if the car is to be certified. Tubing wall thickness will vary. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable and practical