Miyuki Cube Beads are prized for their precise shape and uniform color. The 4mm Size actually has the following range of measurements: 3.8-4mm long, 3.4mm wide. Hole is approximately 1.3mm in diameter. When strung, there are 6.5 beads per inch. You will receive 10 grams of beads, approximately 100 beads total. Color #401, Opaque Black.