About CASOMAN
CASOMAN is a hand-tool manufacturer based in Redlands, California, focused on sockets, ratchets, and impact-rated accessories. The brand's catalog spans standard and impact socket sets across 1/4-inch, 3/8-inch, and 1/2-inch drive, bit sockets in Torx, hex, and spline profiles, socket accessories like extensions and universal joints, tool storage cases, and hand tools including pliers. CASOMAN organizes its lineup by drive size and by service task -- brakes, spark plugs, batteries, oil changes, tires -- with a stated focus on practical coverage and fair pricing rather than the largest possible piece count.
On RevRated, the CASOMAN 3/8-Inch Drive Impact Socket Set, 49-Piece is one of our top picks in socket set coverage: it fills a gap that 1/2-inch-only impact sets leave open, giving mechanics impact-rated sockets for the 3/8-inch fasteners common on brake calipers, alternator mounts, and other engine-bay hardware. The set carries 5,764 ratings at a 4.7-star average on Amazon, and its 50BV30 chrome vanadium construction with a black phosphate finish matches the metallurgical specification of impact sets from larger, better-known brands.
Brand website: casoman.com
What CASOMAN makes
CASOMAN's range runs wider than the products we review. The lines we know best from our own testing are marked with a star:
Impact socket sets
impact-rated Cr-V/50BV30 sockets across 1/4-, 3/8-, and 1/2-inch drive -- featured on RevRated — featured on RevRated
Standard socket sets
chrome vanadium sockets for hand-ratchet work in SAE and metric sizes
Bit sockets
Torx, hex, and spline bit sockets for specialty fasteners
Socket accessories
extensions, adapters, and universal joints for reaching obstructed fasteners
Tool storage
cases and organizers for keeping socket sets sorted
Why we recognized CASOMAN
The RevRated Top Brand recognition isn't paid for and can't be applied for. We award it to the brands whose products consistently stand out in our hands-on category reviews. CASOMAN earned it on the strength of the products below, evaluated the same way every product on this site is: bought, run on real vehicles, and judged on merit.
CASOMAN products we rated highly
CASOMAN 3/8-Inch Drive Impact Socket Set, 49-Piece
Fills the gap that every 1/2-inch-only impact socket collection leaves open, giving mechanics impact-rated sockets in 3/8-inch drive for brake caliper bolts, alternator mounting fasteners, and other mid-torque engine-bay work. The 50BV30 chrome vanadium steel with black phosphate finish matches the metallurgical specification of premium impact sets, and 6-point chamfered socket openings guide onto fasteners cleanly even at an angle. Included extensions and a universal joint reach fasteners buried behind engine brackets and wiring harnesses, and the set carries 5,764 ratings at a 4.7-star average on Amazon.
Read the 7 Best Socket Sets of 2026 guide →What earned CASOMAN the recognition
- One of our top picks in RevRated's socket set coverage -- the CASOMAN 49-piece set is the only impact-rated 3/8-inch drive set in our roundup, filling a gap that 1/2-inch-only impact collections leave open.
- 5,764 ratings at a 4.7-star average on Amazon, a substantial review base for a specialty impact socket set.
- 50BV30 chrome vanadium construction with a black phosphate finish matches the metallurgical specification of impact sets from larger, higher-priced brands, per our own testing notes.
- Includes extensions and a universal joint in the set, letting the 3/8-inch impact driver reach fasteners buried behind engine brackets and wiring harnesses without removing adjacent components.
- A focused catalog built around sockets, ratchets, and impact accessories organized by drive size and by service task, from a manufacturer based in Redlands, California.