CXA #4 QUICK CHANGE BORING BAR TOOL POST 250-304. For use with CXA tool posts 250-300 or 250-333. Equipped with a split bushing to accommodate a boring bar of smaller diameter. Holds 3/4″ tool with bushing, 1″ diameter without bushing. Interchangeable with Dorian, Aloris, & Phase II CXA series tool posts. While we guarantee your satisfaction, these especially work best with our matching tool posts. Precision ground and hardened. Completely sealed for maintenance free operation. The Product Has Passed Strict Quality Testing. Durable And Easy To Install And Replace. 4 Pack CXA #4 250-304 Heavy Duty Quick Change Tool Post Boring Bar Holder 13-18. Cost-effective, Good After-sales Service. Quality Assurance For Your Peace Of Mind. 4 PCS QUICK CHANGE BORING BAR TOOL POST Holder CXA #4 250-304 Heavy Duty For Lathe. Pls check your old picture or model when you order it. Sorry for any inconvenience caused. Thank you for your understanding. Quick Change Tool Post. Please give us the opportunity to resolve any problem. We understand the concerns and frustrations you might have, and will try our best to resolve the issues. We care about our valued customers, and will always try to help you. 3 HP 3450RPM Electric Motor Compressor Duty 56 Frame 1Phase 115-230V New. 1 Pack E7018 3/32 Inch X 12 Inch 10 Lbs Premium Stick Electrodes Welding Rod New. 100Pack 4-1/2×7/8” 40 Grit T29 Premium Zirconia Flap Disc Sanding Grinding US. ER11/ER16/ER20/ER25/ER32/ER40 Spring Collet Set For CNC Milling Lathe Machine. 6 Pack E7018 1/8 Inch 10-lbs Premium Arc Welding Rods Carbon Steel Electrode Rod. E6011 Premium Arc Welding Rods 1/8 60lb Carbon Steel Electrode (10-lb × 6-pack). 8 200mm Shaft Balance Level Precision Level in Fitted Wooden Box For Machinist. 6-68 mm Hand Adjustable Wide Large Spanner Wrench Tool Shifter Spanner Wide Jaw. Machinist Level 6” Engineers Bar Inspection Block 0.0002”/10” Precision Level. 6Pcs Concrete Rotary Hammer Drill Chisel Set Includes Point Chisel & Flat Chisel.