Allows cropping and stitching to the desired length, Inner diameter: 2.5 mm, but suitable for cable with a diameter of 2~5 mm; covers the area of cable, preventing harmful twists & bends, protect wire and cords from dirt, frays, tangles, and knots; work for Lightning Data Cord and most USB Cable/ Headphone cable, a wonderful charger cable protector/Mac laptop charging cord protector you could have; acts as a second barrier of defense against your pet chewing through the cable, designed to discourage most pets from dangerous and destructive cord chewing; the colorful end pieces make your cable stand out and easier to find, Nice design to giving your cable a new look, no adhesive or residue, permanently adjustable/removable You need to wind them on, which will take a bit time. If you don't like DIY, better not buy it, but you may take the winding as a way of pressure releasing from daily work. Item Dimensions LxbxH 150 × 2 × 2 Centimeters