The Precision Rubber Corner & Boundary Pole Base is a weighted rubber base for use on AstroTurf or hard surfaces. It comes with additional upright socket for use with 1 1/4" (32mm) spiked and non spiked poles. Dimensions of 8.4cm X 23.1cm X 22.6cm For use & Compatible with: [TR484] Precision Collapsible Corner Posts (Set of 4) [TR301] Precision "Sprung" Corner Posts - Fluo Yellow (Set of 4) [TR302] Precision Corner Posts (Pack of 4) [TR704Y] Precision Split 2pc Boundary Pole (Yellow) [TR570] Precision Boundary Poles Set of 12 [TR571] Precision Junior Boundary Poles (Set of 12) [TR570S] Precision Boundary Poles (Set of 12) (Red) [TR570W] Precision Boundary Poles (Set of 12) (White) [TR570Y] Precision Boundary Poles (Set of 12) (Yellow) [TR728] Precision Telescopic Boundary Poles (Set of 12) [TR582] Precision Spring-Base Boundary Poles