The Precision Sonar Bow Mount Sonar Bracket Fish Finder Mount can be used with or without recessed trolling motor pans, on both fiberglass and aluminum boats. Use either factory brackets or Precision Sonar's patented Smart Brackets (not included). Note: you may be required to drill mounting holes if using a Garmin factory gimbal bracket.FeaturesPowder coat finishCan be used with or without recessed trolling motor pansMounting hardware includedCompatible with Precision Sonar Smart Brackets (not included)Length 12.75" on top section of mount and 16 1/2" for complete length of mount with feet