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In its mooring lines Camp manufacturer offers us Ball Nut, adequate protection for the toughest cracks.
It is small, very durable and easy to use.
It is used for protection in the narrow cracks, where nothing else can be placed.
Invented in 1987 by John Middendorf and initially called Lowe Balls, Ball Nuts are the true secret weapon climbers along the way in adventure playground and artificial.
It is indeed small wonders that do not fear the narrowest cracks and have parallel sides, where the only alternative would be pitons. They are also perfect in the "pin scars" (holes caused by the continual and pitonnages dépitonnages) and small hollows where even micro modern camming can do nothing.
In summary, given their extreme lightness, the most passionate experts in climbing adventure playground should always carry at least a pair of Ball Nut (eg numbers 2 and 3).
Its expansion rate is 2:1 for all 5 sizes.
- Size 1 for cracks 3 to 6 mm. Strength: 7 kN
- Size 2 for cracks of 4.5 to 9 mm. Strength: 8 kN
- Size 3 for cracks 6 to 12 mm. Strength: 8 kN
- 4 Size of cracks for 8 to 14 mm. Strength: 8 kN
- Size 5 for cracks of 10.5 to 18 mm. Strength: 8 kN
|specificity||Its rate of expansion is 2:1 for each of five sizes.|