Piston, Ceramic Back Catalog number: CTS-21219 Availability: In the manufacturer's stock Price on request - + Recommended 11-2529 Screw, Comp., 10-32, 304SS, (Gold-Plated), 10/pk Price on request CTS-8068 Quartz Lens Price on request CTS-A11151 Needle Assembly, PEEK™ Price on request