Brand : StanleyHand tools Type : Adjustable WrenchesFEATURES & BENEFITS:Knurl adjusting mechanism for quick and precise adjustmentASME B107.100,ASME B107.8Adjustable jaw design allows tool to grip many fastener sizesBuilt-in tension spring stabilizes movable jawForged chrome vanadium steel is strong and durableLightweight handle designPolished chrome head and chrome-plated body for anti-corrosion protectionLaser-etched SAE and mm jaw scale for easy size adjustmentLightweight handle designAre batteries needed to power the product or is this product a battery : NoIs this a Dangerous Good or a Hazardous Material, Substance or Waste that is regulated for transportation, storage, and/or disposal? : No