Mechanical Tails

Spider Jack by A.R.T.

Ascender/Descnder all in one! Can be used on lines 11mm - 13mm. No Need for separate clutches! (Cannot be attached midline.)

SPIDERjack by A.R.T.

Provides very fluid ascent and descent (competition-level stuff) on arborist-grade climbing lines 11-13mm. Includes Mighty Mouse QuadLock Carabiner

Replacement Clutch for SPIDERjack

With use, dirt and grit in your ropes will erode this replaceable part in your SPIDERjack and grip will not be so pronounced.
For 11-13mm ropes.

Replacement Tether for LockJack TWIN

Dyneema replacement tether for (all models) Lockjack TWIN

A.R.T. LockJack SPORT ascender / descender

Provides smooth ascent and descent on 11-12.5mm arborist-grade ropes when used in a doubled rope technique (DdRT) configuration. Has 1 point of attachment for close-to-body use.

Swivel Connector Accessory for Lockjack SPORT

Replaces the non-swiveling connection point on Lockjack SPORT with metric allen wrench.

Replacement Clutch for SPORT or TWIN 11-12mm

With use, dirt and grit in your ropes will erode this replaceable part in your Lockjack and grip will not be so pronounced.
For 11-12mm ropes.

Replacement Clutch for SPORT or TWIN 12-13mm

With use, dirt and grit in your ropes will erode this replaceable part in your Lockjack and grip will not be so pronounced.

For 12-13mm ropes.

Unicender

 The Unicender by Rock Exotica is an all-in-one ascender/descender that works in both single and doubled rope techniques (SRT and DdRT). This unique “mechanical split-tail” designed replaces the friction element (tied hitch) of a DdRT tree climbing system. Invented in 2005 by arborist Morgan Thompson and now produced by world-renowned machining phenomenon Rock Thompson of Rock Exotica, the T6 alloy Unicender also functions cleanly on single line for abseiling and is not limited to use by professionals only— recreational or beginning climbers will find it a rewarding investment for occasional to regular use as well. 

INSPECTION RECALL OF ROCK EXOTICA'S UNICENDER (click here)

Unicender with 30" Tether and Prusik

The Unicender by Rock Exotica is an all-in-one ascender/descender that works in both single and doubled rope techniques (SRT and DdRT). This unique "mechanical split-tail" designed replaces the friction element (tied hitch) of a DdRT tree climbing system.

INSPECTION RECALL OF ROCK EXOTICA'S UNICENDER (click here)

A.R.T. LockJack SPORT ascender / descender w/Swivel

Provides smooth ascent and descent on 11-12.5mm arborist-grade ropes when used in a doubled rope technique (DdRT) configuration. Has 1 point of attachment for close-to-body use. Has swivel for more flexibility. Shipped with clutches for 11 and 12.5mm ropes.