The Scotty 161 1.5" Ball System Arm is a purpose-built mounting solution for 7–9" fish finders, combining UV-resistant engineering-grade nylon with corrosion-resistant stainless steel hardware for reliable performance in harsh marine environments. The multi-hole top plate accommodates most popular electronics brands, while dual 1.5" ball joints deliver full 360-degree rotation and 180-degree tilt at both ends for precise screen positioning.

Specifications:

• Engineering-grade nylon and stainless steel construction
• UV-resistant nylon resists sun degradation
• Corrosion-resistant stainless steel hardware
• Compatible with all 1.5" Scotty ball system accessories
• Multi-hole top plate fits most popular electronics brands
• 1.5" ball joints provide 360° rotation and 180° tilt at both ends
• 2-1/4" square fixed base
• Designed for 7–9" fish finders
• Easy-grip T-knob for tool-free loosening and tightening
• Designed for 1/4" fasteners (sold separately)