Long and easy -to -grab glass pins suitable suitable for most tissues. The pins are 0.60 mm thick and measure 38 mm long. They are arranged in a simple metal box with sliding lid, so you always know where your pins are. The head of the pins is made of heat resistant glass. 100 pins. Longer: 38 mm.Dimer: 0.60 mm. Upperquality. Glass Head Pins metal.