Dritz Glass Head Pins. These are great general use, multi-task pins. They have an extra-fine 0.5mm shaft which remains strong when pinning through light to medium woven fabrics, cotton, linen, etc. The medium 1-3/8" length works well for pinning through layers of fabric. Attractive white glass heads are heat-resistant and will not melt with the heat of an iron. 250/box Size 22 1-3/8in (35mm).