Piston, Ceramic Back Catalog number: CTS-21219 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21469 250 μL Syringe, High Pressure Price on request 11-2525 1/4" Short Comp. Screw (Gold-Plated), 10/pk Price on request 11-2642 Needle Port Seal, AS-100, ASI-100T Price on request