PETZL Ascension B17A — Ergonomic Rope Ascender Blocker 8–13 mm • Right or Left Hand
Ergonomic and powerful rope ascender, providing comfort and grip even with thick gloves.
The PETZL Ascension B17A is a handle blocker designed for safe rope climbing. Compatible with ropes 8–13 mm, it provides a comfortable and strong grip thanks to its ergonomic, over-molded handle, optimized for two-handed pulls.
The serrated trigger with evacuation slot ensures reliable performance even in extreme conditions such as mud, snow, or ice. The device also features a large lower hole for easy connection of carabiners or pedal attachments.
Compliant with EN 567/12841 standards, it guarantees safety and efficiency for vertical activities and mountaineering. Available in right-hand or left-hand versions, it adapts to each user’s preference. The upper eyelet allows attachment of a carabiner for auto-locking or pulley use, enhancing its versatility.
Technical Specifications
Type: Rope ascender blocker
Model: PETZL Ascension B17A
Handle: Ergonomic, over-molded, comfortable even with thick gloves
Trigger: Serrated with evacuation slot
Rope diameter: 8–13 mm
Upper eyelet: Carabiner attachment
Lower hole: Connect carabiner for sling/pedal
Versions: Right-hand or left-hand
Standards: EN 567 / EN 12841
Color: Black
Use: Climbing, mountaineering, rope ascent
Returns Policy
You may return most new, unopened items within 14 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.



