The Astro Pneumatic AST-2181B ONYX 2-Piece Die Grinder Kit combines a high-performance 1/4" composite body inline die grinder with an 8-piece double cut carbide rotary burr set, delivering a versatile solution for cutting, grinding, and polishing applications. The ONYX die grinder operates at 22,000 RPM with a 1/3 HP motor, providing ample power for demanding material removal tasks. Its compact and lightweight design reduces operator fatigue during extended use, while the rib-textured handle ensures a secure, confident grip. The included carbide burr set features 8 double cut pieces with 1/4" shanks, stored in a blow molded case for organized, job-site-ready storage.
Features
Rear exhaust air flow system directs exhaust air away from the work surface for improved visibility and comfort
Compact and lightweight composite body reduces operator fatigue during extended use
Built-in regulator allows on-tool speed adjustment for precise control
Safety lever throttle enables accurate feathering control for variable material removal
Rib-textured handle provides a firm, non-slip grip during operation
8-piece double cut carbide rotary burr set with 1/4" shank covers a wide range of burr profiles
Blow molded storage case keeps burr set organized and protected
Specifications
Collet Size: 1/4"
Free Speed: 22,000 RPM
Motor: 1/3 HP
Type: Inline
Overall Length: 6-3/4" (171mm)
Net Weight: 1.4 lbs (0.63 kg)
Air Inlet Thread (NPT): 1/4"
Air Hose I.D.: 3/8" (10mm)
Avg. Air Consumption: 3 CFM
Air Pressure: 90-120 PSI
Power Source: Pneumatic
Recommended Uses: Cutting, Grinding, Polishing
Includes
1x Composite Body 1/4" Medium Inline Die Grinder (202)
1x 8-Piece Double Cut Carbide Rotary Burr Set, 1/4" Shank, in Blow Molded Case (2181)
• SA-5: Cylindrical shape, 1/2" x 1"
• SA-3: Cylindrical shape, 3/8" x 3/4"
• SC-3: Cylindrical radius end, 3/8" x 3/4"
• SC-1: Cylindrical radius end, 1/4" x 5/8"
• SD-1: Ball shape, 1/4"
Shipping
- We will usually ship your order in 1 to 2 business days! Orders purchased before 2:00 pm EST may be shipped the same day.
- Your order must have a subtotal of $199 or more to be eligible for free shipping.
- The delay of your order will depend on your location and from which warehouse your order is shipped from. We will always ship your order from the closest available warehouse. Based on our experience, we estimate the transit time to be between 1 to 3 business days across Canada (excluding NWT, Yukon and Nunavut) and 2 to 5 business days to USA.
- All orders will be shipped from Canada.
- You may pick up your order at one of our warehouses, Monday to Friday, from 8 am to 5 pm. Pickup orders are usually ready within 4 hours.
Returns
We are offering a 30-day money-back guarantee!
If you are not satisfied with your purchase within 30 days of receiving the product, you can ship it back to us for a refund or exchange.
Before returning the item, kindly send us a request using the Self-Serve Return option or contact our customer support team to get your return authorization. You may contact us by email at support@mprtools.com, phone at 1-800-905-0410, or chat through our website. We are available Monday to Friday from 8 am to 5 pm ET.
We want to guarantee your experience with us will be outstanding. Here are just a few of the reasons why mprtools.com is the go-to company to get your tools from:
1-Year Price Match Guarantee
We work very hard to ensure we offer the absolute best prices online. If you find it at a lower price somewhere else within 365 days of purchasing, please message us, and we’ll credit you back the difference right away.
30-Day Money-Back Guarantee
It's our duty to provide superior quality tools you can trust to get the job done. If you're not fully satisfied with your order, you can request a return for a complete reimbursement.
