For the slim and grim. Invented in 1987 by Steve Byrne and originally brought to market as Lowe Balls, these have become the secret weapon of many aid and trad climbers.
| BALL NUT N.2 | 40 | 1.4 | 4,5 | 0,18 | 9 | 0,35 | 8 | • | |
| 103401 | BALL NUT N.1 | 31 | 1.1 | 3 | 0,12 | 6 | 0,24 | 8 | • |
| 103403 | BALL NUT N.3 | 49 | 1.7 | 6 | 0,24 | 10,5 | 0,41 | 8 | • |
| 103404 | BALL NUT N.4 | 59 | 2.1 | 8 | 0,31 | 12,5 | 0,49 | 8 | • |
| 103405 | BALL NUT N.5 | 74 | 2.6 | 10 | 0,39 | 16 | 0,63 | 8 | • |
