Necessary tool for teeth Orthodontic treatment. Attention: We provide quality guaranty which order from RZJZGZ they are very strong and we're easy to put on and the colors didn't fade love this product The best way I found to put them on is a ligature gun. Stretch them slowly a few times keeping a finger lightly pressed against the tip of the ligature gun and they go on easier. Feature: 1-Superior Color Stability, fade resistant 2-High elasticity and excellent rebound 3-Tear resistant 4-Medical grade polyurethane 5-Latex free safe for sensitive patients 6-Gentle and continuous force and good memory 7-Rounded corners and a flat top provides a strong ligature that holds the wire tighter and longer 8-Low profile design fits under bracket tie wings and not irritate the gingival Specification: Type: Orthodontic Ligature Ties Material: Rubber Color: Transparent Used for: Dental Orthodontics Treatment Quantity: 40Pcs/Pack (1040 ties) Single Size: 2.3 x 0.39inches (Approx.) Package Included: 40 x Sticks Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.