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400/600 Grit 20lb Aluminum Oxide Rock Tumbler Pre Polish, Stage 3 Rock Polishing Grit for Stone Polishing, Compatible with Rotary & Vibratory Tumblers, Premium Lapidary Grit

400/600 Grit 20lb Aluminum Oxide Rock Tumbler Pre Polish, Stage 3 Rock Polishing Grit for Stone Polishing, Compatible with Rotary & Vibratory Tumblers, Premium Lapidary Grit

Name: 400/600 Grit 20lb Aluminum Oxide Rock Tumbler Pre Polish, Stage 3 Rock Polishing Grit for Stone Polishing, Compatible with Rotary & Vibratory Tumblers
Brand: Mjr Tumblers
SKU: 767855153
Price: 352.18 USD
Availability: InStock
Rating: 5 (3 reviews)

Product ID: 767855153

Details

Brand
MJR Tumblers
Grit Material
Premium Oxide
Grit Number
600
Grit Type
Super Fine
Material
Premium Oxide

🔄Rotary & vibratory compatible

⚙️400/600 grit precision

🇺🇸USA veteran-owned quality

$352.18

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

Description

✨ Elevate your rock tumbling game with pro-grade grit ⚙️

MULTI MATERIAL MASTERY - Perfect for stones, minerals, and glass polishing projects
PREMIUM ALUMINUM OXIDE - Consistent abrasion ensures uniform stone refinement every time
VERSATILE COMPATIBILITY - Works seamlessly with both rotary and vibratory tumblers
FLAWLESS PRE POLISH FINISH - Stage 3 grit smooths scratches for a mirror-ready surface
TRUSTED VETERAN OWNED BRAND - Support quality and service from a USA-based, veteran-owned company

MJR Tumblers’ 400/600 grit aluminum oxide pre-polish is a premium lapidary grit designed for stage 3 rock tumbling. Compatible with rotary and vibratory tumblers, it delivers consistent, fine abrasion to smooth and prepare stones, minerals, and glass for final polishing. Proudly made by a USA veteran-owned brand, this grit ensures reliable, professional results for hobbyists and pros alike.

Specifications

ASIN	B0CP8VPZXZ
Best Sellers Rank	#25,154 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #38 in Tumbling Media
Brand	MJR Tumblers
Brand Name	MJR Tumblers
Compatible Material	Premium Quality Aluminum Oxide
Customer Reviews	4.3 out of 5 stars 17 Reviews
Grit Material	Premium Quality Aluminum Oxide
Grit Material Type	Premium Quality Aluminum Oxide
Grit Number	600
Grit Type	Super Fine
Included Components	Instructions and Grit
Manufacturer	MJR Tumblers
Material	Premium Quality Aluminum Oxide
Material Type	Premium Quality Aluminum Oxide
Number of Items	1
Part Number	MJR20p400/600AO
Unit Count	1.0 Count

Reviews

J**K

Great Product Line and Attention to Detail

I recently placed an order for 4lbs of step 3 pre-polish aluminum oxide from MJR Tumblers, and was pleasantly surprised that each lb was separated into 4 heavy duty ziplock bags. This allows me to store just wants needed in my storage ben, while keeping my extra product in the semi air tight bag which it was shipped in. I was also impressed with there product line, I struggled to find 400 to 600 grit in the aluminum oxide on Amazon, but I am happy MJR Tumblers turned out to be the only one I could find, because i plan on making more orders with this company😊 they also sent some great literature along with my order, including knowledge of there FB page I can join and share my passion with other Rock Hounders🥰 Thank you for this service AND a Special Thanks for your Service 🫡100% satisfied customer!!!

13.03.2026

Z**A

Exactly as described

Is exactly what it claims and works great at a reasonable cost.

14.05.2026

B**.

True Grit

Good stuff and value with Prime shipping

6.04.2026

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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$352.18

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

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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