Foul Pole Ground Sleeves are sold individually and are required. 334012CXX 12' Foul Poles requires the 00402000 Ground Sleeve . 334016CXX 16' Foul Poles requires the F39903 Ground Sleeve. 333024CXX 24' Foul Poles requires the F39902 Ground Sleeve. 334032CXX 32' and 334040CXX 40' Foul Pole require the F39901 Ground Sleeve.