Features: 1. The string is elastic , durable to use. 2. Perfect for DIY jewelry making, such as bracelet, necklace, etc. 3. Cultivating your hands-on ability and develop creativity in jewelry making field. Specification: Condition: 100% Brand New Material: TPU Color: Transparent Optional Size (Diameter * Total Length): 1.0mm * 4m, 0.8mm * 8m, 0.7mm * 10m, 0.6mm * 13m, 0.5mm * 17m, Weight: Approx. 100g Package List: 5 Rolls of Crystal Elastic String How to use: STEP 1: Choose how many layers of elastic string to use according to the diameter of the hole on the beads. STEP 2: Thread the beads until the bracelet fits your wrist (Kindly Prompt: The length of cord= wrist size x 2 + 40cm) STEP 3: Knot the cord. STEP 4: Tighten the cord, adjust the size between beads to make them close together STEP 5: Tie a double knot for two strands of cord, and scissor the unnecessary part of cord. Reinforce with glue or nail polish if necessary STEP 6: Hide the knot in one of beads