Amazon.com : KTRIO Sheet Protectors 8.5 x 11 inch Clear Page Protectors for 3 Ring Binder, Plastic Sleeves for Binders, Top Loading Paper Protector Letter Size, 200 Pack : Office Products
Amazon.com: Polylok 4" Corrugated Pipe Adapter (4" corrugated to 4" SDR 35 or 4" SCH 40) : Industrial & Scientific
Amazon.com: 1 1/2 Inch Diameter Clear PVC Schedule 40 Pipe [Pipe ID 1.590 inch, OD 1.900 inch] (Bluish tint), Choose Your Length (5 inches to 8 Feet) (Selected Length: 3 Feet) : Industrial & Scientific