Pica Dry Special White Refill Leads, 8PK a convenient set of 8 pre-sharpened leads housed in a durable plastic storage box. This set includes three blue, three green, and two white leads, each designed to perform well on a variety of surfaces. ly suited for wet cutting of tiles and stone, these chloride- leads ensure reliable marking without damage. The storage box features a two-piece wing lid that opens easily for quick access to fresh leads. Each lead measures 2.8mm in diameter and 125mm in length. To maintain optimal quality, it is to keep the leads away from temperatures exceeding 104 degrees Fahrenheit (40 degrees Celsius). Model Number: 4043