Features: brand new and high quality Clear plastic cylinder contains about 22 feet of UltraStrong semi-transparent microfine thread on a reel, and has a small pin to attach it to the underside of a collar, the inside of a shirt, etc. Thread can be extended up to 5 feet, can be anchored on an object with the piece of wax that is included, and retracts back into the cylinder when released. (It is suggested that you do the effect using a short length of thread for better control). When the thread breaks, more thread can be fed from inside the cylinder. Thread and mechanism are delicate; careful handling required (this is very, very fine thread- that's what makes it "invisible"). The thread does not break after every use; with careful handling, you can get many uses out of the length of thread that comes in this reel. Thread genie reel cylinder is approximately 5.9" long, and attaches to your clothing with a built-in clip. Each Thread Genie comes with small ball of magicians' wax to attach thread to stationary object and printed instructions. This funny prank toy for kids and adults can be carried anywhere with ease. Take it to the office and prank your co-workers or carry it to school and stamp your mark as the classroom prankster. Easy to use and storage, also they are portable and you can take it anywhere you want. Extremely easy to learn: they are easy props for magicians of all skill levels, can easily attract people's eyes. Specifications: Material:Plastic Size:Approx.7x1.5cm/2.76x0.59in Package Includes: 1x Invisible Thread Retractor Reel note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.