TOHO AMETHYST RAINBOW beads are machine manufactured in Japan. Their uniformity of size and shape makes them a perfect fit for almost any project. TOHO beads are made of glass. TOHO beads have a large hole which allows for multiple-pass stringing, and more creative options in your bead work. 

SIZE-11 #166C Toho Round Seed Beads specifications:

• Color: #166C
• Shape: Round
• Size: #11  
• Material: Japanese glass 
• Measurements: 2.2 mm in diameter and 0.9 mm thick
• Hole size: 0.6 mm, fits up to 22 gauge wire or thread (.025 inch)
• Quantity: sold in 2.5” plastic tubes (8-9 gram, approximately 850 beads)