1,[Brass Material] This ruler limit block is made of brass material, which is very strong and durable, suitable for long term use. And the block has the long service life. 2,[Wear Resistance] This ruler limit block is very wear resistant, so you can do frequent marking work during use without worrying about the high frequency of friction that may damage the block. 3,[No Rusting] This scribe ruler positioning limit block does not rust easily, so you do not have to worry about whether the block will rust and affect your work progress. 4,[Easy to Carry] The scribe ruler positioning limit block is small, lightweight and easy to carry, making it a great tool for everyday use and easy to store. 5,[Applicable Scenarios] This scribe ruler positioning limit block is suitable for all kinds of steel rulers and rulers, with high efficiency and construction rulers that are not easy to fall off, converting it into accuracy marking tool.