Here's what other sites are saying:
Trango BallNutz Protection Ball Nutz by Trango are thin crack protection at its finest. Using a sliding ball/ramp concept, Ball Nutz will protect parallel sided cracks, flares, pin scars and bombays from 3 mm to 16 mm. The three smallest sizes have a 2:1 expansion range, resulting in unmatched security in chossy rock or expanding flakes. The # 4 and # 5 sizes will make you wonder why you ever used tiny cams. While these units are excellent for clean aid (they were even used for the first clean ascent of the Shield), they're also terrific for protecting free climbs. Because of the stiff cable, we recommend using a quick draw whenever Ball Nutz are used to protect free climbing. SPECIFICATIONS of the Ball Nutz by Trango SPECIFICATIONS for 1: Size Range: 3.0 - 6.0 mm (0.12 - 0.24 in) Weight: 29.0 gm (1.0 oz) Strength: 4.5 kN SPECIFICATIONS for 2: Size Range: 4.5 - 9.0 mm (0.18 - 0.35 in) Weight: 39.0 gm (1.4 oz) Strength: 8 kN SPECIFICATIONS for 3: Size Range: 6.0 - 12.0 mm (0.24 - 0.47 in) Weight: 48.0 gm (1.7 oz) Strength: 8 kN SPECIFICATIONS for 4: Size Range: 9.0 - 13.0 mm (0.35 - 0.51 in) Weight: 61.0 gm (2.2 oz) Strength: 8 kN SPECIFICATIONS for 5: Size Range: 11.0 - 15.0 mm (0.43 - 0.59 in) Weight: 71.0 gm (2.5 oz) Strength: 8 kN
BallNutz are thin crack protection at its finest. Using a sliding ball-and-ramp, BallNutz protect small parallel-sided cracks better than any other piece of protection available and they fit where the only other option for pro would be pounding a pin. The flexible stem allows a wide variety of angled placements. Very high expansion ratios make these one of the better holding pieces of gear, and a very good addition to your rack. a Smallest active pro in the world a For aid and trad climbing a Color coded for quick identification a Strength: 7-8 kN a Weight: 29-71 g Specs: Weight: 29-73 g Strength: 7 kN (1); 8 kN (2-5) Range: 3-6 mm, 0.12-0.24 in (size 1) 4.5-9 mm, 0.18-0.35 in (size 2) 6-12 mm, 0.24-0.47 in (size 3) 8-14 mm, 0.35-0.51 in (size 4) 10.5-18 mm, 0.43-0.59 in (size 5)
Trango BallNutz are thin crack protection at its finest. Using a sliding ball-and-ramp design, BallNutz protect parallel sided cracks, flares, and bombays. With size options that range from flake security to small cam replacements, they'll be an invaluable addition to your rack.
- Mountain Gear
Trango reached into an old-school climber's closet to give you the highly versatile and inexpensive Ballnutz. These sliding ball-and-ramp pieces lie between active and passive protections, and they fit in places that cams and stoppers can't, like parallel cracks and thin fissures. With more placement options than a nut and a smaller price tag than any spring-loaded camming device, you simply can't go wrong with the Ballnutz.