Ball Bearing Block -Single with swivel shackle head

The Ronstan Series 20 Single Ball Bearing Utility Block with a swivel shackle head can be universally used for sailing.

Features:

• Precision moulded Acetal sheaves running on ball bearings provide high performance & low friction.
• Low friction
• High static and dynamic load capacity.
• Lightweight
• Slotted pin swivel bow shackle head
• Use for dinghy control lines, dinghy vangs, cunninghams, and traveller controls.

Materials:

• Stainless steel ball bearings.
• UV stabilised Acetal sheave.
• Marine Grade 316 stainless steel load strap and head fitting.
• Impact and UV-resistant, glass-fibre reinforced Nylon plastic cheeks.

Specifications:

• Sheave Ø: 20mm
• Max. Rope Ø: 6mm
• Shackle Pin Ø: 3mm
• B.L: 550kg
• M.W.L: 250kg
• Weight: 20gm