A full set of Pro Nuts. Pro Nuts are a great value as they cover a similar range with seven sizes as nine sizes take in other brands (this also helps to reduce overall rack weight). Sizes 1 - 7. Features: - Curved design provides secure placements and easy removal - Grooves help with setting and extraction in hard stone - Color-coded heads for faster selection Specifications: - Pro Nut N.1: Weight (12g; 0.4oz) / Range 7mm (min), 13mm (max) / Strength 4kN - Pro Nut N.2: Weight (20g; 0.7oz) / Range 10mm (min), 16mm (max) / Strength 8kN - Pro Nut N.3: Weight (30g; 1.1oz) / Range 13mm (min), 20mm (max) / Strength 10kN - Pro Nut N.4: Weight (37g; 1.3oz) / Range 15mm (min), 23mm (max) / Strength 10kN - Pro Nut N.5: Weight (41g; 1.4oz) / Range 18mm (min), 27mm (max) / Strength 10kN - Pro Nut N.6: Weight (47g; 1.7oz) / Range 20mm (min), 29mm (max) / Strength 10kN - Pro Nut N.7: Weight (55g; 1.9oz) / Range 23mm (min), 33mm (max) / Strength 10kN