Gem Bids For 220 L. H. Boring Bar Dia. 20mm Min. Bore Entry Dia. 22mm Steel Body Through Coolant Shank Dia. Min. 20 L. H. Boring Bar Dia. 16mm Min. Bore Entry Dia. 18mm Steel Body Through Coolant Shank Dia. Min. 16 L. H. Boring Bar Dia. 12mm Min. Bore Entry Dia. 14mm Steel Body Through Coolant Shank Dia. Min. 12 L. H. Boring Bar Dia. 10mm Min. Bore Entry Dia. 12mm Steel Body Through Coolant Shank Dia. Min. 10 Carbide Wedge Shape Turning Insert Double Sided Fixing Hole Dia. 2.70mm Thickness Min. 3.1mm