Harken 3405 1 Ton Twing Block with Side-Opening Sideplate, One-Handed Rigging

The Harken 3405 1 Ton Twing Block is a twing and tweaker block with a spring-loaded, side-opening mechanism for true one-handed rigging, even while wearing sailing gloves. Black anodized aluminum sideplates are edged with sturdy bumpers that protect the block, topsides and deck. The aluminum sheave rolls on a bearing system shared with Harken's existing 2.3T high-load snatch block.

Key Features:

• Side-opening side plate: easy to rig on and remove from the sheet
• Spring-loaded button release: quick one-handed rigging
• Anti-capsize bar: keeps the sheave aligned on the sheet
• ULC main bearing: the sheave turns smoothly under extreme loading
• Sideload balls: carry loads, especially when the block is not aligned in light air
• Thimble at pivot base: allows 1:1 or 2:1 up-down control
• Machined aluminum inner sideplates: high strength, low weight
• Soft polyurethane outer side plate bumpers: protect the block and deck

Typical Uses:

• Twing and tweaker control for code zero sheets
• Snatch block use when combined with a soft shackle
• Spinnaker sheet and guy control

Specifications:

• Sheave diameter: 38.5 mm (1-1/2 in)
• Maximum line diameter: 11 mm (.43 in)
• Maximum working load: 1000 kg (2205 lb)
• Breaking load: 2000 kg (4409 lb)