Needle Guide Back Catalog number: 11-2591 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A11372 Tube Assy, Transducer to Check Valve, I2V Price on request CTS-12013 Tungsten Lamp (1000 hr) Price on request CTS-11282 1525 Performance Maintenance Kit Price on request