This looks like Modroc to me. Can anyone confirm that it’s the same thing.

Its not modroc. Mondroc is plaster of Paris for kids doing art projects or broken arms, it's very brittle. This sets solid with high tensile strength.

how long should i wait to hang heavy curtains after plugging the wall using these?

You need to wait until the fixing is thoroughly dry or it may well pull out. how long will depend on how wet you made the fixing before inserting it, personally I would give it at least 48 hrs.

I've secured a coat rack w/ 4 wall plugs: 1 has come loose but I cannot remove it or the other 3. Can I just trim some of this and fill the hole?

Remove coat rack, remove or tap the loose plug further in, then use a plaster filler in the old hole or over old plug, sand it flush, then re-drill the coat rack holes about 1cm from old holes, fit new plugs, use a drill bit 0.5mm to 1mm smaller than recommended, this will make the new plugs fit tighter in the wall, job done.

will this fix a couple of small holes in old plaster?

Only of you're putting wall fixings back in to those holes. There are fillers or other mesh products you can get from paint shops to perfectly cover holes. This product is to reinforce loose brick or plaster to re hang things in the same place or new holes in poor walls or plaster

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WETNFIX (20 Discs) - Fixing Wall Plugs Fast! No Need to Fill or redrill.

WETNFIX (20 Discs) - Fixing Wall Plugs Fast! No Need to Fill or redrill.

Product ID: 105343229

Details

Brand
WETNFIX
Colour
White
Item weight
20 Grams
Material
Wood
Product dimensions
6W x 6H

🔧Works on masonry, wood, ceramics & plasterboard

⏱️Sets in just 3 minutes

🛠️20 discs per pack for multiple fixes

€ 23.83

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Description

🛠️ Fix it fast, fix it right—because your walls deserve the best!

DURABLE HOLD - Restores stability to curtain rails, shelves, hooks, and more, preventing repeat loosening.
COMPACT READY - 20 lightweight discs in a handy pack—your go-to solution for every wall emergency.
FAST TRACK FIXES - Secure loose plugs and fittings in just minutes—no drilling or filling needed.
EFFORTLESS APPLICATION - Simply wet, wrap, and insert—DIY repairs made foolproof and frustration-free.
UNIVERSAL COMPATIBILITY - Perfectly bonds with masonry, wood, ceramics, and plasterboard for versatile repairs.

WETNFIX is a revolutionary wall plug fixing solution designed to secure loose or oversized wall plugs in weak or crumbly masonry and other materials. Each pack contains 20 easy-to-use discs that set hard in just 3 minutes, compatible with masonry, wood, ceramics, and plasterboard. Ideal for repairing curtain rails, shelves, hooks, and more, WETNFIX eliminates the need for filling or redrilling, making it the ultimate quick-fix tool for home and office walls.

Specifications

ASIN	B01B2ULW7G
Best Sellers Rank	5,349 in DIY & Tools ( See Top 100 in DIY & Tools ) 332 in Nails, Screws & Fasteners
Brand Name	WETNFIX
Colour	White
Customer Reviews	4.5 4.5 out of 5 stars (11,208)
Item Dimensions W x H	6W x 6H centimetres
Item Weight	20 Grams
Manufacturer	WETNFIX
Manufacturer Part Number	20 Pack
Material Type	Wood
Model Number	SKU20
Number of Items	20

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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€ 23.83

Duties & taxes included

In stock

Sold byAmazon GERMANYDelivered 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 GERMANY.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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I loved the variety of products available. Will definitely shop again.

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