Drill Bit Storage Case, Extendable Plastic Box, Semi-transparent material for easy viewing of contents Drill Bit Storage Box: Store drill bits neatly and orderly for quick access while preventing rapid oxidation and rusting caused by prolonged exposure to air Translucent Plastic Material: The drill bit storage tube is made of translucent plastic, allowing for easy visual identification of the contents inside Telescopic Tube Design: The length can be flexibly adjusted to accommodate different drill bit sizes Drill bit storage tube inner diameter: 12mm(0.47inch), Retracted length: 120mm(4.7inch), Maximum extended length: 180mm(7.1inch) Products Include: 6Pcs Drill Bit Storage Tube