Bamboo Rulers4 inch(10cm)10 cm (4″)15 cm (6″)20 cm (8″)8 inch (20cm) Accessories The bamboo Ruler is one of the most pleasant to the touch and sustainable knitting tools. Product Name Length Size (cm , inch ) Product ID Picture Bamboo Ruler 4 inch (10 cm) 59486 Bamboo Ruler 10 cm (4 inch) 03082 Bamboo Ruher 15 cm (6 inch) 03083 Bamboo Ruler 20 cm (8 inch) 03093 Bamboo Ruler 8 inch (20 cm) 04351 ← Accessories set, 6 kinds Wraps per Inch Tool Key Chain5 cm (2″) →