Harken 40mm Block with Swivel and Becket - 2637

Shipping from £3.99 or FREE to the UK if you spend over £50*
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  • Harken 40mm Block with Swivel and Becket - 2637

    Harken Carbo 40mm block complete with shackle and swivel on one end and a becket on the other.

    This 40mm Harken block is popular for mainsheet systems on a number of boats.

    Harken Carbo Air blocks are lightweight, strong, reliable and affordable with long lasting quality. These small, compact blocks have very high working loads for safe and easy trimming.


    • Sheave Ø - 40mm
    • Length - 102mm
    • Weight - 48g
    • Shackle pin Ø - 4mm
    • Maximum line Ø - 10mm
    • Maximum working load - 220kg
    • Breaking load - 735kg
  • Delivery and Costs

    We try to treat delivery as a pass through cost and keep the cost to you as low as possible, on top of our already competitive product prices.

    We offer free UK standard delivery for orders over £50, this does exclude boats, trolleys, masts, booms and large items which can't be sent via standard mail.

    Any order placed by midday will leave us the same day unless there is a lead time which we detail on the product page.

    Delivery Costs

    UK 2nd Class Small Packet - £3.99

    UK 1st Class Small Packet - £4.50

    UK 1st Class Small Packet - Over 1KG - £5.99

    DPD Next Day Courier - £8.99

    Courier - Long Items - Masts, Booms Etc - £40

    Close to England - £10

    We are not currently shipping further afield due to customs charges and the cost of shipping, this will be reviewed soon.

  • Frequenty Asked Questions

    What is the quantity for ropes?

    The quantity is meters. If you order 5 items you will receive one 5 meter continuous length of that specific rope.

    How do I claim my first order discount?

    Simply sign up to our newsletter and we'll send your unique first order discount code.

    Do you ship to other locations?

    We are always happy to provide you with a quote for shipping, simply drop us an email to with the items you are planning on ordering and your address.

    Who are Sailing Chandlery?

    We're a team of sailors who are passionate about keeping you sailing and providing an excellent service first time. Find out more.

    I have another question?

    You can call the team on 07793 953564 or email us