

Ronstan Shock – 3/8″ Line – 3/8″ Webbing – Blue
$19.63 $17.67
Weight | 0.1 lbs |
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Shock – 3/8" Line – 3/8" Webbing – Blue
The Sheaveless Black
The obvious choice for those kitesurfers, paragliders, control line deflections and purchase systems that require a lightweight high load capacity block.
Ultimate durability
With no moving parts SHOCKS provide ultimate durability and are maintenance free. They are ideal where sand and grit would compromise a bearing system or where regular flushing out isn?t possible. Their gentle 3-dimensional geometry is kind on lines, but is strong enough to cope with poor leads.
Soft attachment specialists
SHOCKS are designed primarily for 'soft attachment'; spliced to a line end or lashed in place. The elongated attachment aperture is also ideal for webbing attachment, ensuring the intended orientation is maintained.
Virtually limitless applications
The applications for SHOCKS are virtually limitless, including numerous high performance dinghy and small sailboat rigging applications including tweakers, vangs, trapezes, cunninghams, barber haulers and kite bridles. They are also handy on larger boats for uses such as lazy jacks, sail covers, tie-downs, ladder and motor hoists.
Hidden performance
At a mere 2.5g (0.1 oz), SHOCKS are outstanding performers in the strength and weight stakes. The clever design and exacting finishing also provide excellent free running at moderate changes of angle. Small & hi-tech line specialists SHOCKS accept lines from 1.4mm (1/16") up to 8mm (5/16") and function just as well with hi-tech uncovered braids as with traditional double braids.
Features:
- Performance & versatility
- Ultra lightweight
- Ultra compact
- Durable
- Color coded
- Impact resistant
- Small line optimised
- High load capacity
- Poor alignment tolerant
- Soft attachment compatible
- Grit & salt resistant
Applications:
Unlimited uses, including kitesurfing, paragliders, sports kites, power kites, stunt kites, depower kites, traction kites, for deflection or purchase system on control lines
Materials:
Anodized Aluminum
Specifications:
Rope Ø:1.4mm-10mm(1/16" – 3/8")
Height:14.5mm(9/16")
Width: 24.8mm(1")
Length:36mm(1-7/16")
B. L.:1,000kg(2,200lbs)
Weight:12g(0.42oz)


⚓ Smooth Sailing Shipping
Enjoy FREE standard shipping on most orders over $250 within the continental U.S. (excl. heavy/oversized/hazardous items).
We ship via UPS, FedEx, and USPS . Orders are processed in 1–2 business days with typical delivery in 1–5 business days .
🧭 Track The Voyage
You’ll receive tracking info by email once your order ships. If your package is marked “delivered” but not received, please wait 48 hours then reach out to our team.
🛟 Hassle-Free Returns & Exchanges
Returns accepted within 30 days of delivery. Items must be unused and in original packaging.
- Mistaken or damaged cargo? We’ll handle return shipping.
- Changed your course? Return shipping is on you.
- Report defects or damage within 7 days for a free exchange.
💰 Anchor Your Refund
Refunds go back to your original payment method within 5–7 business days after inspection.
📨 Contact the Crew
Questions about your order? Drop anchor at sales@marineelec.com .