Metolius Astro Nuts Sizes 6-10

With an added a transverse taper and silicon-bronze to the revolutionary Curve Nut by Metolius gives these mini-nuts 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: Buy individuals OR pre-packaged sets Pre-packaged sets include 10% discount over purchasing individual units Size 6: Range (min. max.): .24 - .32 in. (5.9 - 8.1mm) Strength: 1350 lbf (6 kN) Weight: 0.39 oz (11.0 g) Size 7: Range (min. max.): .27 - .37 in. (6.9 - 9.4mm) Strength: 1350 lbf (6 kN) Weight: 0.49 oz (13.9 g) Size 8: Range (min. max.): .32 - .42 in. (8.1 - 10.6mm) Strength: 1350 lbf (6 kN) Weight: 0.56 oz (16.2 g) Size 9: Range (min. max.): .37 - .49 in. (9.4 - 12.4mm) Strength: 2250 lbf (10 kN) Weight: 0.77 oz (21.8 g) Size 10: Range (min. max.): .42 - .55 in. (10.6 - 13.9mm) Strength: 2250 lbf (10 kN) Weight: 0.95 oz (26.9 g)