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ART Lockjack Sport

ART Lockjack Sport

ART Lockjack Sport



Ascend or descend using doubled rope technique (DdRT) - all in one unit! Works the same way as a friction hitch but instead of friction cord, the ART Lockjack has an aluminium floating cam which 'pinches' the line when under load to control the speed of descent. Replaceable cams - the unit comes with two different sized cams - one for 11-12 mm rope and the other for 12-13 mm. Your climbing line will run freely through the ART Lockjack when not under load ensuring no slack in your line. Ideal for limb walking. Includes a built-in swivel to eliminate twisting of your line. This device is very sensitive and only suitable for experienced climbers. Please ensure you configure with an appropriate carabiner: ISC Gator, DMM Zodiac, DMM Shadow, DMM Ultra O, Petzl Am'D and Petzl OK. 'Heavier' climbers feel very much at home with the ART Lockjack Sport.

Minimum Qty

1 Items

Order Ships in

1 Bus Days


In Stock

Product Code: 108-07001001

All prices include GST
  • Milled aluminum for precision
  • Integrated swivel at carabiner attachment point - requires two carabiners
  • For climbing lines 11-13 mm in diameter
  • Mid-line attachable for versatility
  • Best paired with DMM Ultra O carabiners with a DMM Prest-In inserted into the swivel hole to reduce the possibility of cross-loading
  • CE Certified
  • Made in Germany

PLEASE NOTE: Adequate training and judgment are needed to reduce the risks inherent in using this equipment. The purchaser's responsibility is to ensure they are competent in using this product. Treetools strongly advise that you do not use any height safety or arborist equipment without first undertaking appropriate training.

Material Milled Aluminum
Stainless Steel
Attachment Mid-line
Rope Ø 11-13 mm
Swivel YES
Weight 305 gms

Under $250  
Auckland $6.90
North Island $9.90
South Island $12.90
Orders Over $250 FREE*

Orders with Rural Delivery addresses may take longer than stated to arrive.


Due to factors out of our control, Treetools is experiencing random shipping delays and supply issues that may result in some gear not being available either in-store and/or online. We apologise for any inconvenience this may cause.

*Free Shipping excludes ladders and overweight product.

NO INTERNATIONAL SHIPPING Treetools is a 'kiwi only' affair.
Find out more about Treetools Shipping and Return Policy here.
All parcels require a signature on delivery unless requested otherwise.

Accurately tracking the life of a product is paramount for your safety

At Treetools, we prioritize your safety above all else, so we cannot accept returns on safety equipment. This policy ensures that your gear is always brand new, safe, and traceable to our trusted manufacturers and suppliers. We understand the critical role this equipment plays in your safety, potentially even preserving your life during climbs or work aloft. Therefore, we urge you to choose carefully before making your purchase. Additionally, please note that suitably trained and qualified individuals should use the climbing and rigging equipment listed on our website. Thank you for your understanding and commitment to safety.

What counts as work at height safety equipment?
  • Ascenders
  • Carabiners
  • Climbing Kits
  • Climbing Lines
  • Climbing spurs
  • Connectors
  • Descenders
  • Friction Cords
  • Friction Savers
  • Harnesses
  • Helmets
  • Lanyards
  • Pulleys
  • Rope Tools
  • Slings
  • Swivels

It is crucial that you select compatible gear for your specific configuration to ensure maximum safety. Failure to do so may result in severe consequences. We highly recommend that you choose the correct diameter rope that matches the hardware you are using. Please note that safety products cannot be returned due to configuration incompatibility. Therefore, we strongly advise you to conduct thorough research or ask us for clarification before making a purchase. Your safety is our top priority.

Replacement Parts

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