Whether you're tightening brake calipers or assembling furniture, the STEELMAN 55489 7-Piece 3/8-Inch Drive Metric Hex Bit Socket Set delivers the dependable grip you need. With hex bits machined from high-strength S2 steel to prevent twisting and deformation of the socket under high loads set into durable chrome vanadium steel sockets, these tools are designed for long-term service. For easy identification, each socket has easy to read size markings permanently stamped into the steel that won't wear or fade away. This set includes the following popular metric sizes: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, and 10mm. To keep them securely attached to ratchets, extension bars, and adapters, each socket features a ball detent recess on the drive end and to ensure maximum torque transfer, the drive ends also have corner recesses that transmit applied force to the flats instead of focusing on the corners which can lead to slippage, rounding, and premature tool failure. Designed and constructed to meet or exceed ASME tool performance standards, these tools can stand up to the rigors of any professional workshop while being just as handy in the home mechanic's garage.


  • S2 STEEL BITS - Hex bits are machined from high strength S2 steel to prevent twisting and deformation under high loads
  • DURABLE SOCKETS - Sockets are made from cold forged and heat treated chrome vanadium steel with a corrosion resistant chrome finish
  • INCLUDED SIZES - 7-Piece set includes 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, and 10mm metric hex bit sockets all in 3/8-inch drive
  • BALL DETENT RECESS - A ball detent recess on the drive end helps hold the sockets securely onto ratchets, adapters, and extensions
  • STAMPED MARKINGS - Sockets and hex bits have permanent stamped markings that are easy to read and won't fade or rub away
  • CORNER RECESSES - Corner recesses on drive ends ensure torque is transmitted to the flats instead of the corners to reduce slippage and rounding
  • EXCEEDS STANDARDS - Designed and constructed to exceed ASME tool performance standards


country of origin
drive size
item height
item length
item weight
item width
manufacture warranty
Lifetime Limited Warranty
measurement standard
3mm; 4mm; 5mm; 6mm; 7mm; 8mm; 10mm
Lifetime Limited Warranty

Where to Buy

Our site participates in using affiliate links through several affiliate programs. Affiliate links earn us commission fees by linking to sites like and

Related Products


No reviews have been posted yet. Please don't hesitate to share Your opinion and write the first review!

Add Your Review