Specifications:Material: PV ResinInk Tank: Double Layer, Thickened and Drop ResistantHorizontal Bubble: High Definition, Double Line Large BubbleThread Length: 50 metersThread Type: Thickened and Lengthened Cotton ThreadAutomatic Reset Button: Ink Pressure Button for Easy Sponge Pressing Features:[Double Ink Tank Design] Features a double ink chamber with a sealing ring for optimal protection against ink leakage.[High Definition Leveling] Integrated double line large bubble design ensures rapid and accurate leveling assistance on site.[Resilient Shell] Constructed with PV resin injection molded shell, providing excellent resistance to drops and wear.[Extended Reach] Equipped with a 50-meter-long, thickened, and lengthened cotton thread, perfect for extensive layout tasks.[Efficient Inking] Offers uniform and obvious elastic lines with strong ink absorption and good moisturizing effect, supplemented by an automatic reset ink pressure button. Package Included:1 x Carpentry Ink Drawing Line Markermso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;'>mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;'>