Material:Elastic; 100G for each pack, about 1000pcs/lot. Size (Not Stretch): 3/8inch 10mm in diameter;100 Percent brand new and top quality Strechy and elastic,strong and durable,great ideal for pet dog to do hair styling Fit for all pet hair grooming.Set of great variety of colors to match your preference.Available for almost all occasions when is needed Measureed by hand,the size maybe have a little errors. Please understand! Packet: about 1000pcs/100G Measureed by hand,the size maybe have a little errors. Please understand