Comprehensive Set: This package includes two pairs of wooden line blocks, each measuring 10.3 cm in length and 2.9 cm in width, equipped with a precise 0.2 cm groove. These are essential for setting accurate, straight lines during bricklaying or paving tasks, ensuring your masonry work is flawlessly aligned. Efficient Design: Featuring a chamfered end, these line blocks allow for quick and easy attachment of masonry string lines. This design enhancement significantly boosts construction efficiency, making it ideal for both residential and commercial masonry projects. Professional Grade Tool: Ideal for professional bricklayers and masons, these line blocks work perfectly with 's ropes to maintain straight and level lines. This not only improves the accuracy of your brick or block laying but also contributes to the structural integrity of your build. Construction: Crafted from high-quality basswood, these line blocks offer durability and a smooth finish, making them a reliable choice for various construction and masonry applications. Their robust nature ensures long-term use in demanding construction environments. Alignment: Each line block features a 0.2 cm groove that securely holds the 's rope, facilitating stable and precise alignment of bricks or blocks. This feature is crucial for maintaining straight and horizontal lines throughout your construction projects, enhancing overall work quality. Color: As Shown Material: Wood Package Contents: 4*fixed shaft Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.