To know what size the insert should be it refers to the last two digits in the code - DTGNR2525M22meaning a TN-22 insert
10 folding sections for compact storage
Measurement Range: 5-20mm
M6 - 30mm - 20 PCS Hex Head
Ideal for Multiple Applications: Suitable for plumbing
PLUGLINE 200 mm Inflatable Blocking Plug – Heavy-Duty Pipe Sealing Solution Insize Vernier Caliper 0-500mm/0-20" Range Series 1214-500 To know what size theIntroduction: The PLUGLINE Inflatable Pipe Stoppers are expertly designed for fast, reliable sealing and blocking of sewers, pipes, gullies, and drainage systems. Ideal for maintenance, repair, and leak inspection tasks, these stoppers are a dependable choice for hydrostatic testing and preventing unwanted ingress of water, gases, and debris. Constructed from high quality, kevlar reinforced NR SBR rubber with customizable options, PLUGLINE Pipe