Solid and premium plastic, flexible and expandable corrugation design, adjustable for different shapes Lightweight and flexible. This plastic construction,will not pit or rust; no freeze-ups Fix alignment or other plumbing problems: bathroom sink drain extension pipe is adjustable to fix an offset or other difficult plumbing problems. Inner diameter of the top connection that attaches to a tailpiece is 1-1/4"(32mm), outer diameter of the bottom outlet is 1.06"(27mm). Flexible corrugated pipe can be easily expanded and bended to an "U", "S" or other shapes, Lengh from 36 - 88cm/14.1-34.6inch DEODORANT DESIGN: inner small plate automatically opens when draining water and automatically closed to prevent backflow. Black rubber washer creates a nice seal at the connection that helps with the smell FAST DRAINING & NICE CONNECTION: diameter of the corrugated pipe is 1-1/2"(38.5mm), large enough for fast draining, not easy to get clogged, snugly connect to a sink drain with the rubber connection without leaking