Astro 1221 Die Grinder Set with 8 Carbide Burrs
The Astro Pneumatic 1221 set provides a right-angle grinder and a mini grinder alongside eight double-cut carbide burrs. The two body layouts let you compare approach angles for the work, while the burr assortment offers different cutting-head shapes on a common 1/4-inch shank.
Specifications and included details
- Includes composite-body 1/4-inch 90-degree die grinder and mini die grinder.
- Eight double-cut carbide burrs: SA-5, SA-3, SC-3, SC-1, SD-1, SD-3, SF-3 and SF-5.
- All listed burr shanks are 1/4 inch; assortment includes cylindrical, radius-end, ball and tree-radius shapes.
- Composite grip, lever throttle and built-in regulator features.
Before ordering
Choose burr shape and permissible speed for the material and operation. Confirm each grinder's speed, air requirements and tool-holding specification in its instructions. The 1/4-inch shank does not describe every cutting-head diameter.
Product questions and answers
Are all eight cutting heads 1/4 inch in diameter?
No. The common 1/4-inch measurement describes the shanks. The assortment lists different head sizes and shapes, including larger cylindrical and tree-radius heads.
Why does the set contain two grinder layouts?
The 90-degree layout and mini grinder offer different approach geometries. Check head, burr and grip clearance to decide which suits the work position.
Does double-cut mean the burr is suitable for every material?
No universal material compatibility is established. Select the burr and speed for the work material using the accessory manufacturer's guidance.
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