It is 0.50mm thick (0.020 inches). (I measured with digital calipers.) This is slightly thicker than a business card (300gsm or 0.014 inches.) - about the thickness of 5 sheets of paper.

Can I cut one of these silicone mats to have smaller mats?

Yes, I have in the past and buying these to do the same thing. Easy to cut with regular scissors

Is there fiberglass inside?

The contents say "silicone." They feel like silicone - very thin and flexible. I use mine under sensitive electronics to reduce the risk of static electricity. I think it would be safe to say that there is no fiberglass inside.

if I applied one or all of these to a paper towel holder rod would it keep the paper towel roll from spinning on the rod?

Haven't done it but wouldn't be surprised if it helped. Both sides of the sheets are quite non-slip. You would only need one (of the three), as they are large 12" x 16".

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TDHDIKE 3 Pack Large Silicone Sheets for Crafts, Liquid, Resin Jewelry Casting Molds Mat, Silicone Placemat. Black & Gray & Beige (15.7 x 11.8 inch）

Product ID: 312168190

Details

Brand
TDHDIKE
Colour
black Black &
Material
Silicone
Product dimensions
30L x 39.9W
Shape
Rectangular

🔥Heat resistant up to 446℉

🧩Multipurpose for crafts & kitchen

🧼Easy to clean & washable

28501CFA

Duties & taxes included

In stock

Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖤 Craft, cook, and conquer with silicone sheets that keep up with your hustle!

EFFORTLESS CLEAN UP - Non-stick, flexible silicone wipes clean with just warm soapy water—no scrubbing stress.
SPACE SAVVY PORTABLE - Lightweight and foldable design fits easily in drawers or bags, ready for crafting or cooking on the go.
HEAT RESISTANT POWERHOUSE - Withstands extreme temps from -20℉ to 446℉, perfect for oven, microwave, or freezer use without warping.
TRIPLE PACK TRIPLE IMPACT - Three large 15.7” x 11.8” silicone sheets in stylish Black, Gray & Beige to match your creative or kitchen vibe.
VERSATILE CRAFT KITCHEN ESSENTIAL - Ideal for resin casting, jewelry molds, pot holders, trivets, and more—your all-in-one creative and culinary companion.

The TDHDIKE 3 Pack Large Silicone Sheets offer durable, heat-resistant mats (15.7” x 11.8”) in elegant Black, Gray, and Beige. Made from premium silicone, they resist temperatures from -20℉ to 446℉, are easy to clean, flexible, and multipurpose—perfect for resin crafts, jewelry casting, and kitchen use as pot holders or trivets. Lightweight and foldable, these mats combine style and function for the modern creative professional.

Specifications

ASIN	B08RD2J1NC
Best Sellers Rank	#184,523 in Home ( See Top 100 in Home ) #1,169 in Place Mats
Brand Name	TDHDIKE
Color	black, Black & Gray & Beige
Customer Reviews	4.5 4.5 out of 5 stars (1,214)
Item Dimensions L x W	30L x 39.9W centimeters
Item Shape	Rectangular
Manufacturer	TOPODO
Manufacturer Part Number	LE
Material Type	Silicone
Model Number	LE1
UPC	600358141464

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