Tipper Tie Round Post Clip-On 2-Inch Tape Insulator, 3/8-Inch, White Excellent if you want to run a strand of polyltape (1/2" up to 2"), wire, polywire, or polyrope (up to 3/8"). Fits round posts that are 3/8" in diameter Versatile, holds tape and/or rope 25 per pack Main color is White