Is this item 2 inch x 1-1/2 inch INSIDE diameter or OUTSIDE DIAMETER???

NEITHER. One end is sized to correctly fit over the outside diameter of 2 inch PVC pipe, and the other end is sized to correctly fit over the outside diameter of 1-1/2 inch PVC pipe. The sizes given are the INSIDE DIAMETERS of the PIPES. These are plumbing fittings, folks. That's how the plumbing world works.

Why do so many reviewers clearly not understand that the given sizes are the nominal sizes of the pipes that fit this fitting?

Because there are no accompanying dimensioned diagrams. Not everyone knows the origins of sizing pipes...we need Inside diameter and outside diameters measurements on printed pix.

What are the actual IDs of this part? The reviews indicate it’s marked incorrectly.

The reviewers are wrong because they don't understand how these things are sized. One end's ID is sized to correctly fit the OD of 2" ID Schedule 40 PVC pipe. This end is, therefore, 2.375" (2-3/8") ID, as it should be. The other end's ID is sized to correctly fit the OD of 1-1/2" ID Schedule 40 PVC pipe. Therefore, this end's ID is 1.875" (1-7/8") ID, also as it should be.

Is joint compound or Teflon tape needed when using this to join galvanized nipple with pvc trap?

No, you don't need to use any joint compound or Teflon tape.

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Fernco Inc. P1056-215 2-Inch by 1-1/2-Inch Stock Coupling

Fernco Inc. P1056-215 2-Inch by 1-1/2-Inch Stock Coupling

Product ID: 299352315

Details

Brand
Fernco
Colour
Black
Connector Type
Coupling
Exterior Finish
Stainless
Item Weight
0.05 Pounds
Item dimensions L x W x H
7.6 x 7.6 x

⚡No-glue, quick install

🔧2" to 1.5" flexible pipe fit

🛡️Chemical & sewer gas resistant

$28.61

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Description

🔗 Connect with confidence — the coupling that means business.

EFFORTLESS INSTALLATION - Forget messy glues and primers—install in minutes with a clean, odor-free process that saves time and frustration.
UNIVERSAL FIT ZERO HASSLE - Seamlessly connects 2" and 1.5" pipes across cast iron, plastic, steel, and copper with precision-engineered flexibility.
BUILT TO LAST BUILT TO SEAL - Durable elastomeric PVC and 300-grade stainless steel bands ensure a leak-proof, chemical-resistant barrier that stands the test of time.
VERSATILE RELIABLE PERFORMANCE - Handles up to 4.3 PSI and 140°F intermittently, perfect for both vertical and horizontal plumbing setups.
TRUSTED BY PROS LOVED BY HOMEOWNERS - Over 60 years of American manufacturing excellence, backed by 4.5-star reviews and industry reliability.

The Fernco P1056-215 is a premium 2" x 1.5" flexible coupling designed for plumbing, sewer, and drain systems. Made from durable elastomeric PVC with stainless steel bands, it offers a leak-proof, chemical-resistant seal compatible with cast iron, plastic, steel, and copper pipes. Engineered for quick, glue-free installation, it supports pipe ODs from 2.15"-2.5" to 1.7"-1.95", withstands up to 4.3 PSI pressure, and intermittent temperatures up to 140°F. Proudly made in the USA and trusted by professionals for over six decades.

Specifications

ASIN	B00077PW40
Brand Name	Fernco
Colour	Black
Connector Type	Coupling
Customer Reviews	4.5 4.5 out of 5 stars (267)
Exterior Finish	Stainless Steel
Global Trade Identification Number	00018578000049
Included Components	Fernco P1056-215
Item Dimensions	7.6 x 7.6 x 10.2 Centimeters
Item Type Name	Cast Iron, Plastic and Steel Pipe Flexible Coupling Connector Sewer and Drain Coupler Adapter Black
Item Weight	0.05 Pounds
Manufacturer	Fernco Inc.
Manufacturer Part Number	P1056-215
Material Type	Polyvinyl Chloride Stainless Steel
Model Number	P1056-215
Number of Packs	1
Number of Pieces	1
Size	2" x 1-1/2"
Thread Size	2 inch
UPC	018578000049
Unit Count	1.0 Count

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$28.61

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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