1Clover Silk Pins 2501 2020-10-29 /0 Comments/in Needles, Pins & Pin Alternatives Clover Pins, pins, Silk Pins Clover Silk Pins 2501 with their very fine shaft of 0.5mm diameter will not leave pin marks in fabrics. The head is made of glass and will not melt with the heat of the iron. SKU: NP-2501