You will want to get the needles as coarse or heavy as possible for the larger plastic tubes. The finer ones are more suitable for the thinnest tubes or inner tubes on metal tubes
40 Gauge Triangular Felting Needle for fine detailed work – Créations Christine
Triangular Felting Needle for Needle Punching Machine - China Felt Needle, Non Woven Needle
3D Printed Felting Needle Holder for Arthritis and Fine Motor Challenges
Felting Needles - Needle felting – felting 4 fun
The Fibrecrafts Felting Needle Holder
What Is The Difference Between Felting Needle Gauges and Types? — Star Magnolias
Felting needles are industrial needles, used in commercial wool felt production, and felting artists have adopted these needles for hand felting.
Professional felting needles triangular — Fudge and Mabel
The tube fly needle, Global FlyFisher
Felting Needles. Our quality felting needles are heat treated for extra strength. colour coded for easy identification. 5 x 38 Gauge spiral (orange).
Felting Needles, 32G,36G,38G Spiral, Star, Reverse, 40G,42G colour coded sets
Guide to Needle Felting: How to Get Started
Dose the twisted needle twist as it goes into the wool? – Felting and Fiber Studio
Star felting needles 38G - Medium Star - from 2pcs - UNICORN FIBRES
Conical Non-woven Needle 15X16X32X3 M332 G53017 for PU Leather Base Fabric