Ronstan Series 42 Ball Bearing Mast Track

This Series 42 ball bearing mast track offers a durable alloy construction designed for headsails and mainsails. It features precise fastener and plunger stop hole spacing for reliable sail control on multihull boats.

Features:

• Ball bearing profile ensures smooth sail movement and reduced friction
• Low-profile design with integrated plunger stop holes for secure car positioning
• Durable alloy construction provides strength while minimizing weight
• Standard fastener holes spaced evenly for consistent mounting stability
• Compatible with tracked sail systems for efficient rigging setups
• Designed for headsail and mainsail applications

Specifications:

• Width: 42 mm (1 21/32")
• Fastener Hole Diameter: 10 mm (3/8")
• Fastener Hole Spacing: 100 mm (3 15/16")
• Plunger Stop Hole Spacing: 50 mm (1 31/32")
• Track Profile Height: 21 mm (13/16")
• Material: Alloy
• Boat Size Range: 18 - 22 m (59' - 72')