Exhaust pipe expander tool for car motorcycle 1-5/8in to 4-1/4in kit1、Applicable Range: With 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. 2、Automatic Pipe Expansion Kit: This tool kit provides the convenient collets and expanders needed to stretch tail pipes before making tight seals to pipes with smaller diameters, ideal for home DIY or professional auto shop. 3、High Quality Materials: All collets are constructed from aerospace grade 6061 aluminum, while the expander adopts tempered 40CR alloy structural steel, high hardness, ensuring robustness over the long service life. 4、Equipped With Storage Box: Ideal for fitting aftermarket exhaust components to standard exhaust pipes, includes a handy tool storage case for easy storage of tools, and easy for you to carry. 5、Simple Operation: You just need to choose the appropriate collet, clamp the tail tube, and expand the tube, the operation of our stretcher kit is really simple.