1 Ton Twing Block
The Twing block features a spring-loaded side opening mechanism for true one-handed rigging, even while wearing sailing gloves. Black anodized aluminum sideplates are edged with robust bumpers to protect the block, topsides, and deck. The sheave is aluminum rolling on a bearing system shared with Harken’s existing 2.3T high-load snatch block.
Features:
- Side opening side plate – Easy to rig and remove from sheet
- Spring loaded button release – Quick one-handed rigging
- Anti-capsize bar – Keeps sheave aligned on sheet
- ULC main bearing – Sheave turns smoothly under extreme loading
- Sideload balls – Carry loads especially when the block is not aligned in light air
- Thimble at pivot base – Use 1:1 or 2:1 up-down control
- Machined aluminum inner sideplates – High strength, low weight
- Soft polyurethane outer side plate bumpers – Protects block and deck
Uses:
- Twing, tweaker control for code zero sheets
- Can be used as a snatch block when combined with a soft shackle
- Spinnaker sheet and guy control
Specifications:
- Sheave Ø (mm): 38.5 mm
- Sheave Ø (in): 1-1/2 in
- Maximum line Ø (mm): 11 mm
- Maximum line Ø (in): .43 in
- Maximum working load (kg): 1000 kg
- Maximum working load (lb): 2205 lb
- Breaking load (kg): 2000 kg
- Breaking load (lb): 4409 lb


⚓ 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 .
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