Features: Package comes with 100pcs refills, the length is 5.1" (130mm), 1.0mm fine point, offer a precise, smooth and clear line. High temperature disappearing ink marking pens, the ink can disappear at 158 F (70 ). Pure white suit for deep color leather and it needs 5-20 seconds to appear. And off-white is specific for fabric ONLY. rose-red, red, black and blue suit for light color fabric. Heat erasable ink, ironed the marks, it will disappear, no traces, no residue left on the fabric, allows the marks visible only while be needed (Blue, red, and black will reappear at about minus 10 degrees). Great temporary marking tools for embroidery, dressmaking, tailoring, shoe marking, crafts, quilting, cross stitch, needlework, cloth and fabrics sewing, arts and crafts tracing and stitching. Due to some fabric may have special chemistry. Please test on the fabric before use. Specification: Quantity: 100pcs Color: Rose Red, Red, Blue, Blue, Off-white (Optional) Package Size: 10 x 14 x 4cm/4 x 5.5 x 1.6in Package Weight: 180g/6.3oz Packing List: 100 x Erasable Markers