Crown 5780K electrode tune up kit for Beckett AF, AFG, AR, SF, & SR Burners with up to 9” air tubes Includes: 2 - Electrodes w/connectors 2 - Extension rods 2 - 10/32 Hex nuts 1 - Instruction sheet 1 - KK100 coupler w/end caps 1 - 12” L x 3/16” Dia. copper oil line 1 - 40443 Electrode setting gauge