Survey Marking Flags: 100-pack Blue (2.5" x 3.5") | Agri Drain This 36" collar fits on

This 36" collar fits on the outside of PVC or Corrugated Metal Pipe (CMP) and holds the grate flush inside the collar

and meets ASTM F405 specifications

while the flat blade is practical for moving loose material and cleanup

and underground tanks with this 5' Tile Probe

5" to 22" and is built specifically for Corrugated HDPE Drainage Pipe

Survey Marking Flags: 100-pack Blue (2.5" x 3.5") | Agri Drain This 36" collar fits onWork faster and with more confidence in the field with these Survey Marking Flags: 100 pack Blue (2. 5" x 3. 5"). Built on 21" steel wire, they are a practical choice for surveying, landscaping, underground utilities, sewers, tile lines, and field layouts.