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Stone Burrs for Wonder Junior Mill

Stone Burrs for Wonder Junior Mill
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SKU: PY577, Part Number: WJSTONE, Shop more WonderMill items


The thick corundum stone burrs of the Wonder Junior mill are designed to combine aggressive precision grinding with long burr life. Using the stone burrs your Wonder Junior can grind wheat (both hard and soft varieties), oat groats (dehulled oats), rice, triticale, kamut, spelt, dry beans, lentils, dent ("field") corn, popcorn, dried sweet corn, split peas, buckwheat, barley, rye, millet, teff, quinoa, amaranth, sorghum, dried mung beans, garbanzos, and more (all dry grains and beans.) The Wonder Junior can easily be adjusted to grind coarse, fine, or anywhere in between—so you're ready to make flour, grain meal, cereal grinds, cracked grain... you name it. Switching between stone and steel burrs takes only a couple of minutes. This burr set comes standard with the Wonder Junior Deluxe grinder. They're long wearing, so the original set will serve most users for years. Purchase this set if you want replacement or spare burrs.

The stone burrs on this page are the upgraded bolt-on style.

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Manufacturer Part Number WJSTONE
Brand WonderMill
Length 4.0"
Width 4.0"
Height 1.0"
Product Weight (lbs.) 1-1/2 lb.
Color Gray
Material Stone
Origin Imported


We stock this product in our Nebraska warehouse. Most of our shipments are by FedEx Ground or Home Delivery and you should receive your order in four business days or less from ship-out. Click here for more information about shipping.


Overall Rating:
5 Reviews
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  • They function as they were designed too.
    By on - Verified Buyer
    From the time that I received the grain mill I have not had a problem the Wonder Jr., but I needed to replace the stone burrs because of improper use. This new pair work just as they should, and grind my einkorn kernels to a fine flour. Thank you.
    1 person found this review helpful.  Did you?
  • Wonder Jr stone burrs
    By on - Verified Buyer
    Although my original burrs are only half worn I decided on the old adage "one is none two is one". So I decided to order a spare set just in case. The quality of these Stones appears to be OEM quality so they should last a good long time. The price at PHG was the best price I could find online that actually had these burrs.
    Was this review helpful to you?
  • Great burrs
    By on - Verified Buyer
    Thank you Pleasant Hill! They got this out quickly in the midst of this virus, thank you! I have the old style body Wonder Deluxe Junior and wanted an extra set of stone burrs. They do not sell the older style stone burrs anymore, but the conversion is very easy for the new burrs to fit onto the old style mill--no conversion kit or extra purchase is required. I called WonderMill and talked to them.

    All you do is take a small rubber head mallet or similar tool and pop out the 2 pins on the body of the older mill that match the pins on the burrs (i believe they are the top 2 pins). The new burrs come with 2 bolts on them (it looks like there should be 3 bolts and one of them is missing, but there is only supposed to be 2 bolts on the new burrs). Line the 2 bolts up with the 2 holes you made by popping out the pins. The 3rd pin you left on the body of the mill will line up and fit into the hole on the burr and help hold the burrs in place.

    I love this grinder, it is fantastic. I bought the mill from Pleasant Hill as well. Durable and reliable.

    Thanks again!
    Was this review helpful to you?
  • Wondermill delux replacement parts
    By on - Verified Buyer
    I was looking to get spare replacement grinders for my Wonder Junior rmill. I bought these to replace the ones that were wearing out. They're great and work wonderfully.
    Was this review helpful to you?
  • Wonder Mill Jr Parts
    By on - Verified Buyer
    I was looking for spare replacement parts for my Wonder Mill Jr, (I lost my adjustment knob). Not only did you have the parts I was looking for IN stock but you had great prices and FREE shipping too!
    Was this review helpful to you?

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