The Dritz Double-Sided Seam-Fix is a three-in-one tool. The tool features a small, fine blade seam ripper, a heavy duty blade, and special rubbery tips for removing threads.Details:Fine and heavy duty seam ripper blades cut threadsThe white rubbery tips on the protective caps grab and erase threads awayRaised arrows on the center of the tool indicate the seam ripper size under the capSoft finger grips located on both sides for comfort