SEM High-Build Primer Surfacer - 20oz Aerosol Can - White [42043] Brand_Marine Audio It has two adjustment points

It has two adjustment points to allow tension settings from 2 to 22 lb

for testing power

The Dual-View Mirror has two independently adjusting mirrors and an aerodynamic design that reduces vibrations

Integrated high-decibel speaker for critical alarms

SEM High-Build Primer Surfacer - 20oz Aerosol Can - White [42043] Brand_Marine Audio It has two adjustment pointsHigh Build Primer Surfacer 20oz Aerosol Can White High Build Primer Surfacer is a flexible acrylic coating for priming steel, aluminum, urethane, fiberglass, and plastics. Features: Provides superior adhesion Excellent filling properties Works on multiple substrates, including metal and plastic Easy to sand Topcoat with most refinish material Applications: Steel Aluminum Plastic SMC Fiberglass Properties: 20 oz. Aerosol Coverage: 11 sq. ft. at 2 mil