Astro Tools Metal Repair Compound
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About Astro Pneumatic Tool Co.
Founded in 1972 and headquartered in South El Monte, California, Astro Pneumatic Tool Co. has spent more than five decades earning the trust of professional mechanics, body shop technicians, and serious DIYers alike. Operating under house brand names that include ASTRO, ONYX, T, and THOR, the company has built a reputation for delivering a remarkably broad catalog of hand tools, air tools, shop equipment, and automotive specialty tools — all engineered to meet the demands of working professionals.
What sets Astro apart is its genuine commitment to one-stop shopping for the trade. Rather than specializing narrowly, Astro covers the full spectrum of the shop floor: from precision fastening tools to paint and body equipment, lifting gear, lighting, and undercar specialty tools. Whether you're running a busy collision center or wrenching in your own garage, chances are Astro makes the tool for the job.
Hand Tools Built for the Professionals
Astro's hand tool lineup is one of its most celebrated product areas. The brand's socket sets are a perennial bestseller, and for good reason — Astro pioneered the low-profile "Nano" impact socket design, which dramatically reduces the overall working height to help technicians access fasteners in tight, restricted spaces that standard sockets simply can't reach. These sets are available in SAE and metric configurations across multiple drive sizes.
Equally impressive is Astro's offering of socket extensions, including the Goliath Torque-saver Impact Extension Bar series. These extensions are engineered to handle the forces generated by modern impact wrenches without sacrificing reach or durability. Rounding out the fastening toolkit are Astro's highly regarded ratchet wrenches, most notably the Flex Head Nano Socket Ratchet Wrench line. Featuring a 100-tooth ratcheting mechanism and a c-clip retention system, these wrenches are specifically designed to pair with Astro's proprietary Nano-style sockets for a combined working profile under one inch thick.
Air Tools and Shop Equipment
Astro's air tool lineup is just as deep, spanning cutoff tools, die grinders, drills, impact wrenches, spray guns, and riveters. Within this category, the brand's air hammer retainers and air hammer accessories reflect Astro's long heritage in pneumatic tool engineering. Astro air hammers and their supporting components are trusted in muffler shops, body shops, and general mechanical repair for their reliability and hitting power.
On the shop equipment side, Astro offers an often-overlooked but genuinely essential tool: the paint shaker. Astro's air-operated paint shaker (Model 4550/4550A) features a patent-pending orbital drive mechanism for quieter and faster operation, and is capable of handling containers from a pint up to a gallon — making it a staple in body shops, cabinet shops, and industrial finishing environments.
A Legacy of Innovation
Across all of its product lines, Astro Pneumatic Tool Co. continues to blend time-tested tool design with genuine innovation. From the Nano socket ecosystem to specialty undercar and brake tools, Astro remains one of the most comprehensive tool brands available to working professionals. With over 840 products and decades of industry experience behind it, Astro is a brand worth knowing — whether you're stocking a professional shop or building out a serious home garage.