<p>Standard 6 nail installation, symmetrical screw pitch 44 mm. Title: Bicycle Six Nail Disc. Model: 140. Specification: 140mm, 1.85mm thick. Material: 410 Stainless steel. Weight: 140mm about 105g (With screw). Applicable: The center distance of the hole is 44mm as the standard six-pin disc. After putting on the new brake disc, it takes a few days to wear it together. Remember not to drop oil on the disc.</p>