✨ Christmas Special: Get 35% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Sustainable Harken 40mm Twing Block Save 75% + Free Ship [YWGFBHxu]

$28.99 $92.99 -69%

40mm Twing BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.Features:Opening side p

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

Sustainable Harken 40mm Twing Block Save 75% + Free Ship [YWGFBHxu]

40mm Twing Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.

Features:

  • Opening side plate - Easy to rig and remove from sheet
  • Spring biased to open when unlatched - One-handed operation
  • Roller at pivot base - Use 1:1 or 2:1 up-down control
  • Carbo Air® block construction - High strength for durability and lightweight for maximum float in light air

Uses:

  • Dinghies, sport boats, and small keelboats
  • Spinnaker sheet and guy control
  • Code zero sheet up-down control

Specifications:

  • Sheave Ø (mm): 40 mm
  • Sheave Ø (in): 1-9/16 in
  • Length (mm): 89 mm
  • Length (in): 3-1/2 in
  • Weight (g): 86 g
  • Weight (oz): 3 oz
  • Maximum line Ø (mm): 12 mm
  • Maximum line Ø (in): 3/8 in
  • Maximum working load (kg): 275 kg
  • Maximum working load (lb): 606 lb
  • Breaking load (kg): 825 kg
  • Breaking load (lb): 1818 lb

Owner's Manual (pdf)

What Our Customers Say

January 26, 2026

Absolutely no complaints!

A purchase I am very, very happy with.

- Phoebe Z..

January 26, 2026

Absolutely no complaints!

I am very, very, very satisfied with this.

- Guadalupe Z..

January 26, 2026

Absolutely no complaints!

The workmanship is truly phenomenal.

- Caleb U..

Write a Review

You Might Also Like

Discover more great products from our collection.

Belt Curve LT562

Belt Curve LT562

(509)
$23.99 $76.99 -69%
Rato SteelSeries Prime+

Rato SteelSeries Prime+

(383)
$32.99 $105.99 -69%
RUD RP CARGO 4,5 RP1 - 0139

RUD RP CARGO 4,5 RP1 - 0139

(629)
$42.99 $137.99 -69%
Countertop Color Cuatro (UK)

Countertop Color Cuatro (UK)

(658)
$72.99 $233.99 -69%
BIOPLAST® XTREME

BIOPLAST® XTREME

(934)
$30.99 $99.99 -69%

Copyright 2026 © technovaprecision.com

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY