KLASSE plastic head pins are general-purpose straight pins for securing pattern pieces, seams, and hems on medium-weight fabrics during sewing and alterations. This pack includes 90 pins at 34 mm (1⅜ in) with assorted bright plastic heads and smooth nickel-plated tempered steel shafts. Use the coloured heads for quick visibility during cutting and fitting, and avoid ironing directly on the heads when pressing.