Brick Liner is an auxiliary tool with a spring-loaded clip that clamps bricks securely, giving bricklayers a quick way to pull precise brick lines for accurate layouts. The rubber pad grips firmly on the brick surface and does not require perfect tension during installation, reducing setup time and protecting the brick face. Easy to use: the exact line slot is located on the outer jaw, so the line can run smoothly around inner and outer corners for both straight and curved layouts. Durable, high-quality performance: built for practical use, this tool maintains its performance over long periods of heavy operation. Compatibility and use: suitable for standard brick sizes and common masonry projects; compact and robust for repeated use. Use scenarios: - Laying brick walls with straight courses and 90-degree corners to ensure uniform lines. - Outlining curved or arched brickwork, arches, or decorative patterns that require precise line guides. - Veneer brick installations or exterior cladding where consistent alignment is important.