Use the bright, easy-to-see markers to mark your boundary lines. Made of bright yellow .024 poly with black screen printed markings. Size is 3.75" x 3.75". See below for aluminum boundary line markers. Property Boundary Line Markers 202PBLYP$0.52, 50/$24.50, 200/$78.00, 500/$170.00 Aluminum Property Boundary Line MarkersSame features as above, but made of .012 gauge aluminum which is painted yellow and screened with black lettering. 202PBLYA$0.60, 50/$26.00, 200/$86.00, 500/$190.00 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.