Comfort Grip, Heat Resistant, 100pc. The Comfort Grip Magic Patchwork Regular Pins are 1-7/16in x 0.6mm. They have a comfort grip head that makes picking up and maintaining a grip on the pin, easy. The Comfort Grip Magic Pins are also heat resistant, so if you iron over them, they will not be ruined. The pins come in a designer storage case that closes, so you won’t lose any pins!