Specification: Model: M3NR3;  Size: M3;  Outer Diameter: 7mm;  Length: from 2mm to 15mm;  Material: Nylon;  Color: Black  / White;     Features: 1. M3 round nylon column, 14 sizes in set, black / white color availble.  2. Widely used in many electrical circuit board to play the role of isolation.  3. Good insulation, lightweight, rustproof, will not be corroded.     Pacakage Included: Item    Length    Outer;  Diameter    Quantity;  M3 Round Column    2mm    7mm    10Pcs;  M3 Round Column    3mm    10Pcs;  M3 Round Column    4mm    10Pcs;  M3 Round Column    5mm    10Pcs;  M3 Round Column    6mm    10Pcs;  M3 Round Column    7mm    10Pcs;  M3 Round Column    8mm    10Pcs;  M3 Round Column    9mm    10Pcs;  M3 Round Column    10mm    10Pcs;  M3 Round Column    11mm    10Pcs;  M3 Round Column    12mm    10Pcs;  M3 Round Column    13mm    10Pcs;  M3 Round Column    14mm    10Pcs;  M3 Round Column    15mm    10Pcs;  Total Quantity    /    140Pcs.