Delta 16 spindle pulley part number 434-10-430-0001. ã‚â indexed aluminum pulley has a keyed 1-3/8 bore smaller diameter is 4-5/8 larger diameter is 5-11/16 24 index marks 3/4 belt. fits: ã‚â  46-765x type 1 lathe46-746 type 1 lathe 46-745 type 1 lathe