Crown KK112 12+ Pack Of Universal Oil Burner Couplings Description: KK112 Koupling King II - 12 Pack Of KK100 This Kit Includes: Everything needed to replace almost any defective domestic burner coupler. 12 ea. 6" x 1" OD assembled couplers with 1/2” and 5/16” end caps. (Over-all 6” coupler length) 4 ea. 1/2" motor end caps 8 ea. 7/16" pump end caps 3 ea. 5/16" pump end caps Replaces Westwood S85-560, # 1250