Built for real-world tree work, Tightline Arb produces professional arborist climbing equipment designed by climbers with over 30 years of industry experience.

Based in the South West of England, our growing range of arborist equipment is developed with practicality, reliability and everyday usability in mind — from lightweight climbing accessories to innovative SRT equipment and arborist hardware.

Every product is created with genuine working experience behind it, focusing on dependable gear that performs in demanding environments without unnecessary complication.

Whether you're climbing daily, refining your setup or simply looking for reliable arborist equipment, Tightline Arb delivers straightforward gear designed by people who actually use it.

THE WORLDS SMALLEST FULLY LOCKING CAM FOOT ASCENDER IS FINALLY READY.

PRE-ORDER YOURS NOW!

WORLD'S SMALLEST LOCKING CAM FOOT ASCENDER

RISER Locking Cam Foot Ascender

£32.99 £44.99

RISER™ Foot Ascender

The RISER™ Foot Ascender has been engineered to deliver professional performance in an ultra-compact package.

At just 50 W x 40 H x 25mm D the research shows this to be the world's smallest fully locking Cam Foot ascender.

Designed specifically for arborists, tree climbers and rope access professionals, the RISER combines a lightweight 120g construction with a precision-engineered lock-open cam, allowing fast, simple rope installation while providing smooth, reliable ascent.

Unlike bulky traditional foot ascenders, the RISER has been designed to reduce weight and profile without compromising performance. Its compact body sits close to the boot, helping minimise snagging while maintaining excellent rope tracking and dependable engagement throughout the climb.

Compatible with 9–13 mm climbing ropes, the RISER is ideal for SRT climbing systems, rope walking systems and everyday arboricultural work where efficiency and reliability matter.

Features

  • Ultra-compact body design

  • Lightweight construction

  • Lock-open cam for quick rope installation

  • Smooth, reliable rope engagement

  • Reduced profile to minimise snagging

  • Designed for professional arborists

  • Compatible with 9–13 mm climbing ropes

  • Left and right foot versions available

  • Built for demanding daily use

Whether you're ascending into the canopy, carrying out dismantles or climbing on spikes, the RISER Foot Ascender delivers fast, efficient rope ascent in one of the most compact designs available.

NOT FOR PPE USE

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Introducing the new RISER SRT range

Now Stocking Arbsession Grommets

World Exclusive 8kn Mini Autolock Carabiner

Worldwide Exclusive Release

Wren 8kN Auto Locking Micro Accessory Carabiner UK

£10.75

The Wren 8KN Auto Locking Micro Carabiner is a compact, lightweight accessory carabiner designed for arborists, climbers and outdoor professionals who need dependable everyday equipment organisation.
Manufactured from high-strength 7075 aluminium, the Wren combines low weight with impressive durability in a compact 61mm format.

The auto-locking gate adds additional security compared to standard accessory clips, helping reduce accidental opening during use.
Despite its compact size, the Wren delivers an impressive 8kN strength rating, making it ideal for securing climbing accessories, organising equipment and general non-PPE arborist applications.


Designed for practical daily use, the Wren is lightweight enough for everyday carry while remaining durable enough for demanding outdoor environments.

Key Features

  • Compact 61mm design 8kN auto-locking gate
  • Lightweight 7075 aluminium construction
    Corrosion-resistant anodised finish
  • Multiple colour options available
  • Ideal for high impact arborist equipment Utility usage such as SRT Foot ascending tool strop attachment & organisation
       

Important Information;

The Wren is a NON PPE accessory carabiner and is not certified for life support use.

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About us

With a passion for tree care and safety, we strive to offer top-notch products that meet the needs of arborists at all levels. Our team is dedicated to providing excellent customer service and ensuring a seamless shopping experience for our customers.