Catrat's Colored Thin Gel Ink Roller Ball Pens - 10 Color Set in a Box (Purple, Red, Pink, Orange, Light Green, Green, Light Blue, Blue, Dark Blue, Black) - 10 Colors - Purple, Red, Pink, Orange, Light Green, Green, Light Blue, Blue, Dark Blue, Black Length: about 6 inch; Width: Narrow & comfortable Material: ABS plastic, including grip area Writing Point: 0.38mm. Between thin and medium Use: School, Diary, Fun, Office