Diamond brand chains are known for their quality

NOTE: Under rocker split lines fit all carbs including S&S E but super B will require a 1" spacer between intake and carb otherwise enricher knob will hit the oil line unless you modify it

15/16" ouside diameter

Bolts measure 1/2-13 x 2-3/4

Inch OHV Harley-Davidson 1936-69

#SPC-039 3/8 ID x 7/8 Length Chrome Plated Steel Universal Spacer - 5 Pack Brand_Cooper Smithing Co. Diamond brand chains are knownColony Machine #SPC 039 3 8 ID x 7 8 Length Chrome Plated Steel Universal Spacer. Size: 3 8 inside diameter x 7 8 inch length. 3 4" outside diameter. Bag of 5 pieces. Made in Ohio, USA.