Home / Turning / Lathe Tool Holders & Tool Posts / Tool Post, Boring Bar, 3-1/8″ Diameter Tool Post, Boring Bar, 3-1/8″ Diameter$29.00 Category: Lathe Tool Holders & Tool Posts Description Description Uses 1/2″, 3/4″ and 1-1/8″ Boring Bars Related products Indexable Internal Threading Tool Kit, 1/2″ (NEW) Import, Item # 2302-1500 $177.95 Read more Indexable External Threading Tool Holder Set, 3/4″ (NEW) Import, Item # 83984D $153.00 Read more Indexable Turning Tool Set, 1/2″ , 5pcs., (NEW) Import, Item # FL5220260 $48.95 Read more Indexable Internal Threading Tool Kit, 3/4″ (NEW) Import, Item # 2302-1787 $224.85 Read more