Harken 29 mm Carbo Triple Swivel w/ Becket 345

Harken 29 mm Carbo Triple Swivel Block with Becket (345) – Ultimate Compact Power

The Harken 345 is the pinnacle of Harken’s micro‑Carbo range—a full‑featured triple‑sheave pulley in an ultra-light, composite package. Ideal for 4:1 or 6:1 tackle systems, this block combines rigid Carbon® cheeks with a Delrin® 29 mm sheave and stainless steel ball bearings to provide smooth, low‑friction performance on control lines such as vangs, cunninghams, spinnaker guys, and sail trim systems.

A dual 360° swivel setup prevents line twist and ensures perfect alignment, while the integrated becket allows clean anchoring for purchase setups in tight spaces. Despite its strength, the unit weighs just 77 g—lighter than many single classic blocks and perfect for weight‑sensitive racing dinghies and performance yachts.

🔧 Key Features

• Triple 29 mm Delrin® sheaves with stainless steel ball bearings

• Lightweight Carbon® side cheeks for strength without bulk

• Full 360° dual swivel shackle heads to prevent line twisting

• Integrated becket for multi‑purchase rigging efficiency

• Max line diameter: 8 mm (5/16″)

• Working load: 449 kg (990 lb) — Breaking load: 907 kg (2,000 lb) 

• Dimensions: 85 mm length, weight 77 g