Skip to product information
1 of 1

Harken

Harken 29mm Double Carbo Air Block, Part Number 381

Harken 29mm Double Carbo Air Block, Part Number 381

SKU:79052

Regular price $58.97 USD
Regular price Sale price $58.97 USD
Sale Sold out

10 in stock

  • 30-Day Returns
  • Secure Checkout
  • Free Shipping — Contiguous U.S.

Shipping & Delivery

Free standard shipping is available on all orders shipping within the Contiguous United States, with no minimum order. Alaska and Hawaii are excluded from free shipping. Orders are typically processed within 1–2 business days. See our Shipping Policy for complete terms.

Returns & Refunds

Eligible items may be returned within 30 days of delivery. Items must be new, unused, uninstalled, and in original packaging. An RMA is required.

Installment options at checkout are provided by Shop Pay and its partners and are subject to eligibility. Options depend on your purchase amount and may require a credit check by the financing partner. Terms, rates, and eligibility are determined by the financing partner. For details, see the Shop Pay Installments terms during checkout.

29mm Double Carbo Air Block

Low-friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.


Specifications:

  • Sheave: 29mm / 1-1/8in.
  • Length: 54mm / 2-1/8in.
  • Weight: 34g / 1.2oz
  • Maximum line: 8mm / 5/16in
  • Maximum working load: 299kg/ 660lb
  • Breaking load: 737kg / 1625lb

The Harken 29mm Double Carbo Air Block is a compact, lightweight sailing block designed for reliable line handling and easy trimming. With low-friction performance and a high working load for its size, this double-sheave block is well suited for sailors who need efficient control in compact rigging applications.

Part of Harken’s Carbo Air block range, this block combines low weight with dependable strength and affordability. Its compact design makes it practical for applications where space and weight matter, while the double-sheave configuration supports efficient routing of compatible line. Use it for sailing and other marine rigging applications that require a 29mm block accepting line up to 5/16 inch.

Key Features:

  • Low-friction sheaves: Help provide smooth, efficient line handling for easier trimming.
  • Double-sheave configuration: Supports compact, organized line routing in marine rigging systems.
  • Lightweight design: Weighs 1.2 ounces, helping reduce added weight in the rig.
  • High working load: Supports a maximum working load of 660 pounds for demanding trimming applications.
  • Compact 29mm format: Provides block performance in a small profile for space-conscious installations.

Product Details:

  • Brand: Harken
  • Part number: 381
  • Product type: Double Carbo Air block
  • Sheave diameter: 1-1/8 inches
  • Overall length: 2-1/8 inches
  • Maximum line size: 5/16 inch
  • Weight: 1.2 ounces
  • Maximum working load: 660 pounds
  • Breaking load: 1,625 pounds

Choose the Harken 29mm Double Carbo Air Block for compact, low-friction line control backed by clearly specified load ratings for marine rigging applications.

SEO Meta Description:
Shop the Harken 29mm Double Carbo Air Block for lightweight, low-friction line handling, a 660 lb working load, and line up to 5/16 inch.

Truck Freight: No
Oversized: No

View full details