OX Pro 40oz/1.1kg Standard Blue Marking Chalk - Permanence 1, Precise & Reliable Markings Ideal for Varied Surfaces, General Construction Chalk Line Refill Powder for Chalk Reels

Large 2.5lb Capacity for Extended Projects: The 1.1kg/2.5lbs capacity ensures you have enough chalk for larger, extended projects, eliminating the need for constant refills and increasing efficiency on the job site. Smooth Application with High-Flow Nozzle: The high-flow nozzle allows for smooth, consistent chalk application, delivering even coverage and crisp markings for precise and professional results every time. Leak-Proof, Airtight Cap: The leak-proof quarter-turn twist cap keeps the chalk in an airtight chamber, preventing moisture from causing clumping and ensuring your chalk stays dry and ready for use. Crisp, High-Visibility Blue Markings: This standard blue chalk formula provides bold, clear lines that are easily visible on a variety of surfaces, making it ideal for both indoor and outdoor projects. Easy Cleanup on Smooth Surfaces: The chalk is designed to be easily wiped off smooth surfaces like drywall, leaving behind clean marks that won’t interfere with your finish work. 1-Day Weatherability for Short-Term Markings: With a 1-day weatherability rating, this chalk is perfect for temporary markings that stay visible throughout the job but disappear when you’re done. Versatile for Multiple Surfaces and Jobs: Suitable for use on wood, plasterboard, concrete, stone, and metal, this chalk works across various materials, making it ideal for framing, masonry, carpentry, and general construction.