“Core Bit Extension – 12″ Long, 1-1/4″ Dia. – 7 Thread” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × 17/64 - Extra Length Drills - 18" Overall Length $70.99 Quantity $70.99 × 1" x 16" Segmented Core Wet Cutting Diamond Drill Bit (Drill Depth 14") $238.99 Quantity $238.99 × Core Bit Extension - 12" Long, 1-1/4" Dia. - 7 Thread $190.99 Quantity $190.99 Coupon: Apply coupon Update cart Cart totals Subtotal $500.97 Shipping Enter your address to view shipping options. Calculate shipping Country / region Select a country / region… United States (US) State / County City: Postcode / ZIP: Update Tax $0.00 Total $500.97 Proceed to checkout