Hydraulic Exhaust Pipe Expander, 1-5/8" to 4-1/4" Size, 10 T Pedal Pump Included with 4 Dies, 2 Storage Cases for Copper Aluminum Tubes in Car RepairingProduct Features Wide Expanding Range The hydraulic exhaust pipe expander provides various collets for a broad expansion range from 1 5 8" to 4 1 4". Includes: mild steel expander (1 5 8" 1 7 8" collet, 2" 2 1 2" chuck), and aluminum alloy expander (2 3 8" 2 3 4" Collet, 2 3 4" 3 1 8" collet, 3 1 8" 3 1 2" collet, 3 1 2" 3 7 8" collet, 3 7 8" 4 1 4" collet). Labor saving Hydraulic System This muffler pipe expander forces pipes to expand by using an