• 3mm Neoprene Covers
• Each cover is laminated with dark gray spandex
• Marine-ready materials
• Protects against dust, grime and other environmental invaders
• Designed to work with any mounting clamp/application
• JL Audio Tower Speaker Swivel Mounting Kit • Clamp has an Inner Diameter of 1.660 Inches • For M-Series and MX-Series JL Audio Tower Speakers • 334 Degrees of Total Swivel Capability