Inserts, PTFE,pk 6 Back Catalog number: M-TSTIN Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended T-11OP Ozone precursors trap, TT24-7 Price on request U-COV03 O-Ring, Size 003, pk 10 Price on request U-CENKIT Starter Kit: Centri booster pack (DiffLok caps and O-rings) Price on request