Ronstan Sheaveless Block Line Webbing Blocks

Ronstan Sheaveless Block Line Webbing Blocks, sold by Ronstan as SHOCK™ blocks, are compact sheaveless blocks (also called low-friction rings). They suit small-line rigging jobs that don't need a ball bearing block. They work for line deflection and light purchase systems, and they attach with soft webbing, a spliced line end, lashing or a Dyneema® link.

Key Features:

• Anodised aluminium construction for light weight, durability and impact resistance
• No moving parts, so the blocks are maintenance free. They suit places where sand, grit or salt would foul a bearing block.
• Soft attachment compatible, with an elongated attachment aperture that keeps the block correctly oriented to the load
• Gentle 3-dimensional geometry that is kind to the line and tolerates poor leads and lead-angle changes
• Colour coded to help keep complex rigging layouts organised
• High load capacity for their size and weight

Typical uses include tweakers, vangs, trapezes, cunninghams, barber haulers and kite bridles on dinghies, skiffs and small multihulls. On larger boats they suit lazy jacks, sail covers, tie-downs and similar light-duty rigging. They are also popular for kitesurfing, paragliders and power kite control lines. Ronstan is a well-known name in sailing hardware.