The Model 551 rescue kit includes:
Superior's 80010 Heavy Duty Industrial Air Hammer
(x2) 11" long flat chisel No. 40102 2ea. 6" short flat chisel No. 40103
(x2) 7" panel cutter No. 40701
25' high pressure UL approved hose
3300 Quick Change Safety Retainer
Heavy duty crushproof kit box 401
high pressure regulator #4911945 
#347 CGA tank fitting that lets you use the kit on the 4500 PSI Scott & Survivair air tanks.