• [Improve Your Vehicle Efficiency]: Truck tail pipes need an inch in total pipe diameter for every 100 horsepower; Increase your vehicle efficiency and improve your engine life with the ABN Exhaust Pipe Stretcher Car Exhaust Tools Kit that has 6 sizes to expand your exhaust system
• [Works with Most Metals]: Exhaust expander works on all types of pipes, from aluminum to stainless steel; Pneumatic pipe expander provides an expanding range from 1-5/8 to 4-1/4 inches (4.1 to 10.9cm)
• [Optimal Expansion]: Tail pipe expansion tool kit comes with 6 steel expander collets in 1-5/8-inch, 2-inch, 2-3/8-inch, 2-3/4-inch, 3-1/8-inch, 3-1/2-inch, and 3-7/8-inch (4.1, 5.1, 6.1, 7.1, 7.9, 8.9, and 9.9cm); Replacement rubber rings included
• [Expand and Shape Easily]: Lubricate all parts of the exhaust spreader tool and attach correct collet; Insert power tool driven pipe expander into pipe, connect impact drill (not included), and expand pipe slowly; Turn tailpipe expander tool about 1/4 of a turn after each stretch
• [Easy Organization]: Blue blow-molded plastic storage case features a perfectly-fitted space for each of the tailpipe expander kit tools to keep them organized for easy access

WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.