Original Swiss quality with low prices have made these our most popular beading tools! These Swiss-made Beading Tools are the finest you’ll ever use. They're made of high quality, hardened tool steel. Concave tips are precision-made to form smooth beads and to provide well-defined and consistent size graduations.Replacement sizes are always exactly the same. All sizes have 2.6mm shank diameters. Overall tool length is 60mm (2-3/8").Sold in 10-piece packs. Tool# Diameter (mm) Tool# Diameter (mm) 0 0.25 12 0.85 1 0.30 13 0.90 2 0.35 14 0.95 3 0.40 15 1.00 4 0.45 16 1.05 5 0.50 17 1.10 6 0.55 18 1.15 7 0.60 19 1.20 8 0.65 20 1.25 9 0.70 21 1.30 10 0.75 22 1.35 11 0.80