Stylish — this is the red warrior. At 15 gauge, the BK504 is our thinnest SmartFlex glove. But thin as it is, this glove is thick on comfort and flexibility. It is designed to protect from nuisance abrasions and to provide a big-time grip.

About the glove

The 15-gauge, nylon knit body of the Brass Knuckle® BK504 is approximately 20% thinner than comparable 13-gauge coated gloves, making it a great choice when exceptional dexterity is required. This glove sets the standard for precision handling in dry environments.

Our proprietary polyurethane foam coating process results in a spongelike slip resistance unlike any other, providing a more breathable solution as well as critical barrier protection. This is a high-quality PU coat and delivers maximum tactile sensitivity.

Offering best-in-class protection balanced against tremendous value, the stylish black palm coating on a red liner further encourages compliance. Simply said, this glove looks cool. Choose BK504 for light-duty protection, all-day comfort, and maximum flex.


  • Softer feeling, high-quality polyurethane coating on full fingers and palm. Ideal choice for dry and light-oil applications. Delivers excellent grip, even against oils, fats, and greases. Polyurethane coatings improve tactile sensitivity relative to other coatings. Polyurethane is grippy without being sticky.
  • A sponge-like foam coating, compared to smooth coatings, improves slip resistance particularly in wet applications. More breathable than flat coat.
  • The 15-gauge nylon seamless knit material provides maximum flex and tactile sensitivity. This is the standard for precision handling.
  • Uncoated back and wrist help improve ventilation.
  • A full knit wrist — seamless and stretchable — provides a snug fit and prevents dirt, debris, and cold from getting inside glove.

Roll Up Your Sleeves and Tear In

SMARTFLEX BK504 Brochure (pdf)

Brass Knuckle Hand Protection Catalog (pdf)

Brass Knuckle Sorter

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