If the design of this product has any logic, it eludes me. The block is made of rigid, inflexible plastic. Therefore it is not possible for it to fit the outlet of a specific toilet. If the toilet outlet isn't a perfect circle (which I've never seen in real life), then that block isn't airtight. And if it's not tight and you try to blow air or water into the toilet, the likely result is that the toilet's contents will slam back into the user. Not a very pleasant prospect. If the device were made of flexible rubber instead of hard plastic, I see the approach to this design might be worth considering. However, I am disgusted that I have to give one star. This is one of my biggest buying mistakes.
Soundproof Ear Muffs For Shooting - Adult Hearing Protection Earmuffs For Noise Cancellation And Safety
30 Review
2 Long Eyeglass Chains For Men And Women - SIGONNA Eyeglasses String Holder Strap Chain - Neck Retainer For Eye Glasses And Sunglasses - Rope Lanyard - 2 Pack In Black
39 Review
Adult Shooting Ear Protection Earmuffs - Noise Cancelling Safety Ear Muffs For Hearing Reduction
26 Review
Men'S Heated Jacket: PROSmart Waterproof With Hood And 12Volt Battery Pack - Black
24 Review
Wall mount ONKRON R4 for TV 10"-32", tilt-swivel, up to 25 kg, black
11 Review
Continental ContiVikingContact 7 205/55 R16 94T winter
71 Review
Braided Stainless Steel Faucet Connector 3/8" Compression X 1/2" IP Female Thread (2 Pcs) - 32" Length
15 Review
Moen T2471BL Genta LX Posi-Temp Pressure-Balancing Modern Trim Valve Required in Stylish Matte Black
10 Review