DMM Boa Locksafe HMS

The DMM Boa Locksafe is a classic all purpose large HMS karabiner. It's twist lock design makes it a quicker to use, and can even be operated one handed. A true workhorse biner.

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With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery Dates

Estimated Delivery Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery Dates provided on product pages.

The Current Estimated Delivery Dates for DMM Boa Locksafe HMS is

DMM Boa Locksafe HMS Description

  • Brand : DMM
  • Season : Perennial
  • Code : 5011965
  • Weight : 0KG
  • Screwgates - DMM Boa Locksafe

    The DMM Boa Locksafe is a classic all purpose large HMS karabiner, ideal for belays, rigging and any time that you need a large area for big loads. It's twist lock design makes it a quicker, and often more convenient biner to use, and can even be operated one handed. The offset shape gives the Boa a lot of extra strength without compromising it's core function as a HMS, this means that not only can it handle standard HMS duties well - belaying, italian hitches - but it provides a lot of extra capacity and safety when it comes to rigging. It handles all tasks really well and is particularly popular with arborists and industrial users making the DMM Boa locksafe a true workhorse biner.


    DMM Boa Locksafe HMS Deep Zoom

    Buyers Guide

    Sizing Information

    Technical Information


    • Classic large pear shape offers plenty of internal space
    • Wide gate opening allows loading of large diameter ropes
    • Large working area spreads the load
    • Strong twist lock closure secures the gate safely
    • Hot forged construction produces long term durability
    • I Beam section for increased strength to weight ratio
    • Keylock clean nose and fully heat treated aluminium for lightness and maximum strength
    • Great for rigging and belay situations: can accommodate several knots
    • Weight: 86g
    • Gate opening: 24mm
    • Strength ratings:
      • Closed Gate - 25kN
      • Open Gate - 8kN
      • Minor Axis - 10kN 

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