Quick'Up + hand ascender - CLIMBING TECHNOLOGY — The Cave Exploration Society Inc.

Left or right-hand light alloy ascender handle with ergonomic rubber grip for climbing ropes. Main characteristics: new overmolded, ergonomic handle ascender, designed for greater efficiency when pulling and increased resistance to wear and tear; cam opening lever usable with one hand;&
Left or right-hand light alloy ascender handle with ergonomic rubber grip for climbing ropes. Main characteristics: new overmolded, ergonomic handle ascender, designed for greater efficiency when pulling and increased resistance to wear and tear; cam opening lever usable with one hand; 

Caving Ascenders –

TUPA Outdoor Hand Ascender Climbing Ascender 8-13mm Vertical Rope Access Climbing Rescue Caving

Caving Ascenders –

Beginner's Guide to Caving: Explore the Underground World - Inglesport

Single Rope Technique: Most Up-to-Date Encyclopedia, News & Reviews

CMC Climbing Technology Quick Roll Ascender - Allstar Fire Equipment Inc.

Caving Ascenders –

Multi-use light-alloy right-hand rope ascender for climbing ropes or as a clamp for hauling/rescue. Main characteristics: cam opening lever usable

Simple + hand ascender - CLIMBING TECHNOLOGY — The Cave Exploration Society Inc.

Hand Ascender High Strength Aluminum Alloy Climbing Ascender with Ergonomic Rubber Handle Strong Rappelling Gear Equipment for Rock Climbing Tree

Caving Ascenders –

Quick Up Ascender

Paliston hand ascender is elaborately designed for ascending a rope, perfect for rock climbing, tree climbing, arborist and any other ascension activities. The ergonomic construction gives you a large and comfortable handle to hold on and can be installed with one hand, also gives it an excellent purchase on rope from 8 - 12 mm. The climbing ascender moves smoothly up the rope but cam grips rope securely when weighted. The rope cam is also applicable to hold even on dirty, muddy or icy ropes.

Paliston Climbing Hand Ascender for Rock Climbing Arborist (Left Hand)

Caving Ascenders –

NewDoar Left Hand Ascender Rock Climbing Tree Arborist Rappelling Gear Equipment CE Certified Rope Clamp for 8~13MM Rope(Left Hand Black) : Sports & Outdoors