Description: 1.Easy to Carry: Light weight, pen-size body clips to shirt pocket and features a comfortable finger grip. 2.Pen-type flat tungsten steel cutting , precision cutter for optical fiber 3.Easy cutting, abrasion resistance. 4.Fiber Optical Cleaver Scribe Tool, Fiber Optic Cleaving Tool, Pen-type Carbide Fiber Scriber (Flat Head) 5. Usage: First peel off the coating of the fiber, then wipe it clean, put it on a clean and spacious mirror (or a platform such as glass, not placed on a metal or hard platform), and then use the fiber to cut the pen vertically. Scratch across the fiber and carefully tap it to be OK. Specification: Material: tungsten steel Length: 132mm Package Includes: 1Pcs Fiber Optic Pen Cutting Tools