Do they fit Eb alto sax mouthpieces? What's the benefit to these?

Yes, they fit alto sax mouthpieces. The benefits to these are they both cushion teeth when playing as well as protect the mouthpiece from damage from the teeth, thus prolonging its useful life.

What is the thickness? (.4 or .8 mm etc?)

The black mouthpiece patch is 0.8mm thick and the clear mouthpiece patch is 0.35mm thick

How often should they be changed?

When the patches are worn through, then change them. Depends on your usage.

do these fit Vandoren metal mouth pieces

I have not used them on the Vandoren metal mouth piece but I suspect that it WILL fit just fine. It's slightly small on the hard rubber mouthpieces, and metal mouthpieces are usually narrower than the hard rubber, so it will probably work. They stick beautifully and it makes a huge difference in playing comfort.

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Rico D’Addario Woodwinds RMP01B Reserve Mouthpiece Patch - Clarinet Pads - Saxophone Accessories - Clarinet Mouthpiece Pad - Clarinet Accessories - Black, 5-Pack

Product ID: 281762216

Details

Brand
D'Addario
Colour
black
Instrument key
C Major
Material
Wood
Style
Single

🦷Prevents teeth sliding for embouchure control

5️⃣5 patches per pack for long-lasting use

🛡️Protects mouthpiece from wear

$28.82

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Description

🎷 Elevate your sound, protect your gear — play like the pros with Reserve Mouthpiece Patches!

PRECISION THICKNESS - At 0.80mm thickness, these black patches offer the perfect balance of comfort and durability.
TRUSTED LEGACY OF EXCELLENCE - Crafted by D’Addario Woodwinds, a century-strong leader in premium woodwind accessories.
ENHANCED EMBOUCHURE STABILITY - Prevent teeth from slipping, promoting correct embouchure development and superior tone control.
ULTIMATE MOUTHPIECE PROTECTION - Shield your clarinet or saxophone mouthpiece from damage and wear with durable, residue-free patches.
EFFORTLESS APPLICATION REMOVAL - Secure adhesion that’s easy to transfer or remove without leaving any sticky residue behind.

The Rico D’Addario Reserve Mouthpiece Patch 5-Pack offers clarinetists and saxophonists a premium solution to protect mouthpieces and stabilize embouchure. Made from high-quality black material at 0.80mm thickness, these patches prevent teeth sliding and ensure consistent tone production. Easy to apply and remove without residue, they come from D’Addario’s century-long expertise in woodwind accessories, trusted by top musicians worldwide.

Specifications

ASIN	B00FLXNKJE
Brand Name	D'Addario
Color	black
Customer Reviews	4.7 4.7 out of 5 stars (2,851)
Finish Type	Polished
Global Trade Identification Number	00046716580894
Included Components	Mouthpiece
Instrument Key	C Major
Item Dimensions	19.1 x 5.1 x 0.3 centimeters
Item Type Name	Woodwind Reeds Case
Item Weight	0.09 Pounds
Manufacturer	Rico
Manufacturer Part Number	RMP01B
Material Type	Wood
Model Name	Reserve Bissgummi
Model Number	RMP01B
Set Name	5-Pack
Style	Single
UPC	046716580894
Unit Count	5 Count

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$28.82

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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews