glass grinder bits
Worth a lookShows a sweet-spot price point ($23.20 avg), but a small market ($46K/yr) keeps it on the watch list.
Avg price
Incredible$23.20avg listing price — sweet spot $15–$100
Review moat
Great170.45avg incumbent reviews — the moat a new listing must climb
Returns
Great1.3%return rate — above 6% kills the launch gate
Price range
Great$11.50–$33.41cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great7.2%search→purchase rate — share of searches ending in a sale
Brand share
Good70%top-5 brand share — brands hold most of the demand
Competition
Okay57%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-15.1%90-day search growth — must beat 0% to launch
Market size
Bad$46K$46K/yr · 28K searches
Competition
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.Brands
17 falling
Sellers
42
Top-5 brand share
70%
Open market
26%
- Ecarke22%
- Buenoarte18%
- dmsphd16%
- Funrous8%
- Penitue6%
- Arikit4%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Ecarke Diamond Grinder Bit Head Tools for Stained Glass - 4 Sizes (1 3/4 1/4 1/8 Inch) with Brass Core - Glass Supplies
Ecarke$28.294.4★733 rev
Buenoarte Combination Set 1 3/4 1/4 1/8 Inch Diamond Grinder Bit Head Tools Brass Core Stained Glass Grinder Bits & Diamond Grinder Bit Head Tools Tools and Supplies for Stained Glass (4)
Buenoarte$28.594.6★129 rev
dmsphd 2pcs 3/4 Inch Diamond Grinder Bit Head Tools Stained Glass Tools and Supplies for Stained Glass Grinder Widely Used for Glass Processing Arts and Decoration (MCB 3/4)
dmsphd$21.334.6★120 rev
2 PCS X 3/4 Inch Brass Core Grinder Bits for Stained Glass Grinder - Diamond Grinding Drill Bit Head Tools Set for Stained Glass Supplies
Buenoarte$19.894.0★25 rev
Glass Grinder Bits Stained Glass Drill Bits Stained Diamond Grinder Bit Head Tools Stain Tools and Supplies(1 Piece 1 Inch)
Funrous$13.524.7★650 rev
Newest
by launch date
2pcs 3/4 Inch Diamond Grinder Bit Head Tools Premium Stain Glass Drill Grinding Bit Heads with 2 Wrenches Suitable for Stained Glass Ceramics Stones Jewelry Arts Supplies
Penitue$16.681 rev
2pcs 5/8in Stained Glass Grinder Bits Diamond Grinding Head Tools & Supplies with 2 Wrenches & 2 Fuses for for Glass Grinders
Penitue$20.043 rev
2pc 5/8 Stained Glass Grinder Bits Self Watering for Stained Glass Grinding Bits Stained Glass Tools and Supplies for Grinder Art & Decoration Processing Tools
HOMAR$22.066 rev
IANFAN 2 Pcs 3/4 Inch Diamond Grinder Bit Head Tools Brass Core Stained Glass Grinder Bits for Glass Processing Arts Supplies (MCB 3/4)
IANFAN$17.678 rev
Stained Glass Grinding Bits with 5/8 inch Diamond Grinder Bit Grinder Bits and Supplies for Stained Glass Grinder (2 pcs 5/8)
dmsphd$24.3431 rev
Trending
90-day click momentum
dmsphd Glass Grinder Bits 3 PCS Diamond Stained Glass Grinding Wheel Includes 1 3/4 1/4 Inch Diamond Glass Grinder Heads (MCB 1 1/4 3/4)
dmsphd$25.534.6★
2pcs 3/4 Inch Diamond Grinder Bit Head Tools Premium Stain Glass Drill Grinding Bit Heads with 2 Wrenches Suitable for Stained Glass Ceramics Stones Jewelry Arts Supplies
Penitue$16.685.0★
2pcs 5/8in Stained Glass Grinder Bits Diamond Grinding Head Tools & Supplies with 2 Wrenches & 2 Fuses for for Glass Grinders
Penitue$20.045.0★
2pc 5/8 Stained Glass Grinder Bits Self Watering for Stained Glass Grinding Bits Stained Glass Tools and Supplies for Grinder Art & Decoration Processing Tools
HOMAR$22.064.5★
Hedume Set of 4 Glass Grinder Bits 1 3/4 1/4 1/8 Inch Diamond Grinder Bit Head Tools Combination Set 4 Sizes Brass Core Stained Glass Grinder Bits & Diamond Grinder Bit Head Tools
Hedume$25.844.9★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -15.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Quality, accurate, and smooth results”
“They fit my machine nicely”
“Good for the price”
“Works well, just as advertised”
“Got lots of use”
“So far they seem to be holding up very well”
“Grinds smoothly, does not chip glass”
“Work well”
“Gift for my daughter”
“compact as well”
What buyers complain about
“wore out quickly”
“two smaller ones do not fit at all”
“Not As Good As The Brand Name”
“They were opened and looked used”
“the one I needed the most came defective”
“Does not fit glastar”
“False advertising”
“it does not slide down far enough to make it usable”
“the inside is all rusty”
“Cheaply made product”