Specs

Size 1 Size 2 Size 3 Size 4 Size 5 Size 6 Size 7 Size 8 Size 9 Size 10 1-5 Aid Set Free Set
Dimensions 0.12 - 0.24 in 0.14 - 0.24 in 0.16 - 0.24 in 0.18 - 0.26 in 0.21 - 0.29 in 0.24 - 0.32 in 0.27 - 0.37 in 0.32 - 0.42 in 0.37 - 0.49 in 0.42 - 0.55 in - -
Strength 1.4 kN 1.4 kN 2.5 kN 2.5 kN 2.5 kN 6 kN 6 kN 6 kN 8 kN 8 kN - -
Weight 0.20 oz 0.21 oz 0.22 oz 0.23 oz 0.25 oz 0.39 oz 0.49 oz 0.56 oz 0.77 oz 0.95 oz 1.11 oz 4.27 oz
Price $14.50 USD $14.50 USD $14.50 USD $14.50 USD $14.50 USD $16.50 USD $16.50 USD $16.50 USD $16.50 USD $16.50 USD $65.00 USD $75.00 USD

Manufacturer's Description

Visit Metolius's Astro Nut page.

Retailers' Descriptions

Here's what other sites are saying:

We added a transverse taper and silicon-bronze to the revolutionary Curve Nut shape to give the Astro Nut Free Set a tenacious bite in each and every placement. The finest materials, combined with our patented shape, give you a powerful tool for protecting micro-sized fissures. We looked at many different alloys before settling upon silicon-bronze. Steel was just too hard for micro nuts and didn't allow them to seat into placements, while aluminum was too soft and didn't provide enough structural strength. Silicon bronze is the perfect material (although very costly) as it exhibits High strength, yet is still soft enough to let the nut bite into the rock's surface and seat into position with maximum holding power. Additionally, on our larger sizes, we Are able to introduce curves into the faces of the Astro Nuts, giving them a massive placement advantage over regular, straight-sided pieces. The small collars on Curve Nuts Are color-coded for quick identification. Astro Nuts Are a huge addition to anyone's rack, aid climbers, free climbers and alpinists alike. Features of the Metolius Astro Nuts Set Pre-packaged sets of 5 Astro Nuts Includes comprehensive instructions on use, cAre and maintenance Available as Aid Set #1-5 or Free Set #6-10

- Moosejaw

When you have nothing but a tiny pin scar to place protection for the crux on your route, it's nice to know you have the Metolius Astro Nut. Metolius made each nut out of silicon bronze for the maximum bite and strength that holds the stopper in place when you take the whipper. Its transverse taper helps you set each piece in flared garbage with ease. And Metolius color-coded and anodized each stopper's collar for easy identification, which you appreciate when you don't have the time to sort through each gear for the right piece. What climber ever has that time'

- Backcountry.com

Metolius Big Wall & Protection Astro Free Set (#6-#10) ASTR012. This make the astro nuts powerful tools for protecting small-sized cracks. The silicon-bronze heads are the perfect blend of strength and bite.

- CampSaver.com

With a transverse taper incorperated into the Curve Nut shape and silicon-bronze construction, the micro-sized Metolius Astro Nuts give tenacious bite in every placement.

- Mountain Gear