PREMIUM AND SOLID CONSTRUCTION:Made of high quality PVC, durable, long-term use, not easy to split. flexible and expandable corrugation design, adjustable for different shapes. FIX ALIGNMENT OR OTHER PLUMBING PROBLEMS: bathroom and Kitchen sink drain extension pipe is adjustable to fix an offset or other difficult plumbing problems. FLEXIBLE & ADJUSTABLE CORRUGATION DESIGN: flexible corrugated pipe can be easily expanded and bended to an \ U\ , \ S\ or other shapes, with maximum extended length of 80CM long when compressed. EASY TO APPLY & FUNCTIONAL REPLACEMENT: easy to connect the top part to a tailpiece of a standard sink drain stopper (diameter of the tailpiece should be 1-1/4\ or 1-1/2 ) it\'s a great replacement for those metal ones.