1 x 6" Liner adaptor These may show some storage marks but are absolutely fine for their intended purpose. Scheidel technoflex plain end to flex adaptors benefit from the following: Unique joint design → Exceptional strength to the lock. Both inner and outer layers made from 316L stainless steel → Corrosion-resistant. Corrugated outer skin → For high crush resistance. Extra smooth inner skin Inner skin → Easydrain down of condensates, less opportunity for soot to collect in the joint area and ease of sweeping Simple Screw fit connection → Easy installation