Eliminate wasted time and cluttered tool boxes with this magnetic wrench organizer. Comfortably holds up to 10 SAE or Metric wrenches. Capable of holding sizes 3/8 in. to 15/16 in. or 10 mm to 19 mm. Magnetic base allows to attach this wrench organizer to most metallic surfaces. The unique ridge design helps prevent your wrenches from making contact with the surface it is attached to, avoiding any unnecessary scratches or dents.