Hign-concerned Chemical:NoneOrigin:Mainland ChinaWIDE APPLICATION - This tail pipe expander kit includes three different expander sizes to fit all 1.125inch/2.85cm to 3.5inch/8.89cm id thin-wall pipe. A MUST-HAVE TOOL - The 3PCS Expander Expander Tool Set is designed to quickly and easily straighten pinch marks and pinch marks in s and tailpipes, and stretch pipe openings or repair damaged pipe ends. CORRECTLY USE OF TOOL - Applies only to all thin-walled tubing from 1.125inch/2.85cm to 3.5inch/8.89cm ID. Can be used with hand ratchets or breaker levers and hand wrenches, but avoid electric ratchets to prevent damage to pipe expander tools from excessive force. PREMIUM QUALITY The extender is made of high-quality carbon steel and has passed rigorous quality inspection to provide strong sturdiness and durability, perfect for professional mechanics and personal repairs.