Needle Kit, 15 µL with Needle Seat and Needle Guid Back Catalog number: CTS-21287 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10686 Needle Seal, Vespel® Price on request 11-4126 Plunger Seal and Back Up Ring Price on request CTS-A11376 Mixer Assembly, 100μL Price on request