SDH Bolt for Ivanko dumbbell handles

REPLACEMENT BOLTS FOR IVANKO DUMBBELL HANDLES +  Genuine OEM Replacement Part.+  Grade 8.  Black-oxide finish. +  5/8-18 (N.F.) w/ custom over-sized 3/8" hex head for greater torque.+  2" length for all SDH handles.+  2-1/2" length for all CDH Handles if one uses Rubber End Plate (EPR).+  With exception of post-2000 RUB/EPR Dumbbells up to 17.5lbs, then use 2" bolt.+ $10 flat fee shipping any quantity in the U.S. Note:  In place of a dumbbell End Plate (a.k.a. "end cap") washers can be used.  Ivanko dumbbell washers fit this bolt head.  Bolt is also known as an "end bolt"