Inside diamater of the 8"?

Tube or coupling described as 8-In has an inside diameter of 8-In.

Inside diameter of 1 1/4

A 1-1/4” rubber sleeve will fit a 1-1/4 PVC pipe! A 1-1/4” PVC pipe has an OD of 1.6” and the sleeve has an ID of 1.6 “ so it fits perfectly over the pipe. It works that way with all the sizes - the PVC’s OD is ALWAYS the same as the sleeves ID. PVC pipe is sold based on it’s ID and it’s OD is always more. Fittings, connectors and sleeves are always sold by the size pipe they are meant to fit (typically slid over) so will have a larger ID than the pipes announced size. Ex: 1-1/2” PVC is 1-1/2” ID but 1.9” OD. You would need to buy a 1-1/2” rubber sleeve (with an ID of 1.9) to fit over the PVC tube! Don’t complicate it any more than the manufacturers already have! Pipe is sold by their ID and fittings are sold by the pipe size that they fit.

inside diameter of 4-inch?

The inside diameter is like 4.3 made to fit a 4 inch pipe

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🔗 Lock in reliability with Supply Giant’s flexible coupling—where durability meets seamless connection!

DURABLE WEATHERPROOF - Engineered to resist chemicals, UV rays, and fungus growth—perfect for indoor and outdoor sewer systems.
EFFORTLESS INSTALLATION - Band slots and flexible PVC design allow quick, tool-friendly setup with just a screwdriver or socket wrench.
UNIVERSAL COMPATIBILITY - Seamlessly connects cast iron, plastic, copper, lead, and steel pipes for ultimate flexibility.
CORROSION RESISTANT CLAMPS - Premium 300-series stainless steel clamps ensure leak-proof, rot-proof, and long-lasting seals.
CERTIFIED UNDERGROUND RATED - Meets ASTM C1173, CSA B602, UPC standards and built to withstand underground conditions.

The Supply Giant 6I46 Flexible PVC Coupling is a 1-1/2" black flexible connector designed for DWV and sewer piping systems. Featuring corrosion-resistant 300-series stainless steel clamps and flexible PVC construction, it offers leak-proof, rot-proof seals compatible with multiple pipe materials. Certified to ASTM C1173, CSA B602, and UPC standards, it’s rated for underground use and resists chemicals, UV rays, and fungus, ensuring long-lasting performance indoors and outdoors.

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€ 43.55

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Manufacturer	Supply Giant
Part number	6I46
Item Weight	150 g
Product Dimensions	3.81 x 3.81 x 7.62 cm; 150 g
Item model number	6I46
Size	1-1/2
Color	Black
Style	Single Unit
Material	Polyvinyl Chloride
Item Package Quantity	1
Number Of Pieces	1
Measurement System	inch
Specification met	not_applicable
Included components	Coupling
Batteries Included?	No
Batteries Required?	No

Supply Giant 6I46 Flexible PVC Coupling With Stainless Steel Clamps, 1-1/2", Black

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