Feature: 1. WIDE EXPANDING RANGE: Ideal for home repair or professional auto shops, ensuring tight seals for standard tailpipes. Expand pipes from 1-5/8in to 4-1/4in effortlessly with this tool kit. 2. RUGGED CONSTRUCTION: Made of aerospace grade 6061 aluminum collets and tempered 40CR alloy structural steel expander, ensuring rugged rigidity and extended service life. 3. SIMPLE OPERATIONS: Choose the proper collet, clamp the pipe, and expand the pipe effortlessly with a 1/2in or 3/4in impact wrench, giving you more ease of use. 4. CONVENIENT SET: Includes a compact tool storage case and protective gloves for safety during installations. Upgrade your exhaust system confidently with this pipe stretcher kit. 5. PROFESSIONAL AND PRACTICAL: The set includes common tools needed to solve exhaust pipe expansion work. Ideal for fitting aftermarket exhaust components to standard tailpipes. Specification: Item Type: Exhaust Pipe Expander Stretcher Tool Kit Material: Aluminum + alloy steel Expanding Range: 1-5/8in to 4-1/4in Use: To Expand Exhaust Pipes Drive Expanding Tool: Approx. 28mm/1.1in Small Steel Collet: 1 5/8in- 1 7/8in Large Steel Collet: 2in - 2 1/2in Collet: 2 3/8in -4 1/4in Wide Expansion Range: The exhaust pipe stretcher offers various collets for a broad expansion range from 1-5/8in to 4-1/4in. Includes: Steel expander 1 5/8in - 2in Collet, Steel expander 2in- 2 1/2in Collet, 2 3/8in- 2 3/4in Collet, 2 3/4in - 3 1/8in Collet, 3 1/8in- 3 1/2in Collet, 3 1/2in - 3 7/8in Collet, 3 7/8in - 4 1/4in Collet. Package List: 1 x Exhaust Pipe Expander Tool Kit (7PCS) 14 x O Ring 1 x Blow Molded Case