AV Stumpfl inline-spring roller pull rod designed as a special-length accessory for inline projection screen systems. It is identified as article BIZ-SRZSX and belongs to AV Stumpfl’s inline product series. The article list specifies a unit of one piece and a gross and net weight of 0.18 kg. No projection type, dimensions, projection surface size, compatibility details, included accessories, or technical video signal interfaces are stated.