uxcell 5pcs Fiberglass Heat Shield Sleeve 5mm(3/16-inch) ID x 2.9ft Adjustable PVC Silicone Fiberglass Sleeve Pipe - Amazon.com
Vent Systems 4" to 5" Inch Duct Reducer Adapter Connector Fitting Pipe Increaser Reducer Cone for HVAC Ventilation Systems, ABS Plastic PVC Pipe 125 to 100 mm - Amazon.com
Small Parts - TPC-125/16-24 -TPC-125/16 Polycarbonate Tubing, 3/4" ID x 1" OD x 1/8" Wall, Clear Color 24" L: Industrial Plastic Tubing: Amazon.com: Industrial & Scientific
Amazon.com: Tape Logic TLP3024KHD Heavy-Duty Mailing Tubes with Caps, 3" x 24", Kraft (Pack of 24) : Office Products
uxcell Fiberglass Heat Shield Sleeve 3mm(1/8-inch) ID x 2.97ft Adjustable PVC Silicone Fiberglass Sleeve Pipe - Amazon.com