Best Instrument manufactures several types of UHPLC fittings and links with UHPLC fittings attached.

The links withstand pressures up to 15,000 PSI, are 316 stainless steel and available in rigid (1/16" OD) and flexible (1/32" OD) styles.  Typical ID is 0.005:, but other ID's are available as customs.  Maximum length: currently up to one meter. 

Fittings are available in four ZDV styles.  Types are available to optimize performance of PEEK, PEEKSil and stainless steel tubings.