※With long handles for comfortable leverage,easily expand 5/16"to 1-5/8"O.D. ※Use on 0.063" wall soft copper and aluminum to 1-5/8" O.D.(anneal hard copper prior to use) ※Use on 0.047" wall soft steel to 7/8" O.D. ※Kit includes six expander heads ※three optional sizes sold separately ※Deburring tool,carrying case,instructions