BIG DOGZ DESIGNSTRACK CLIP'Z For O Gauge FasTrack Track Includes: 1 Pack of 100 Used to hold FasTrack together so it won't separate during usageAttached on back of FasTrack piecesCan be used on straights or curvesEnhance the performance of your Lionel O gauge model railroad with these versatile FasTrack 15 clips. They are compatible with both straight and curved tracks, and come in a variety of colors to match your layout. Made of durable plastic, these clips were manufactured in the United States to ensure quality. Use them to secure your tracks in place and keep your trains running smoothly. These clips are a must-have for any O gauge model railroad enthusiast. KEEPS TRACK SECTIONS TOGETHER SUCH AS 12014 12015 CLOSE MATCH TO COLOR OF FASTTRACK ROAD BED SOME VARIATION IN SIZE OF CLIPS PLEASE NOTE NOT ALL TRACK SECTIONS HAVE THE CUT OUT YOU CAN EASILY MAKE IT WITH A CUTTING TOOL