1.5 brass colored metal tube with tapered tip and threads on the top. : r/whatisthisthing

K&S 5075 Brass Bendable Tube 3/32, 5/32, & 1/8 x 12 Long, 1 Piece Each, Made in The USA : Health & Household

Hypersphere, by Sir Xanadu

Dearborn Brass 1-1/2 in. x 12 in. Chrome-Plated Brass Double Threaded-Joint Sink Drain Tailpiece Extension Tube HDC827-1 - The Home Depot

Fuerza y naturaleza” lo esperan en la Galería Olga Espinach Fernández

The Plumber's Choice 1-1/2 in. x 8 in. Brass Threaded Tube for Tubular Drain Applications, 22GA 81225 - The Home Depot

Hypersphere, by Sir Xanadu

Dearborn Brass 1-1/4 in. x 6 in. Chrome-Plated Brass Double Threaded-Joint Sink Drain Tailpiece Extension Tube HDC819-1 - The Home Depot

Baltimore City Paper, Vol. 33, No. 6 by Baltimore City Paper - Issuu

Brass, Aluminum, Stainless Tube 1/64 to 11/32 ODKS Precision Metals – tagged “Square Brass Tube” – ksmetals