High quality: the triangular ruler is made of high-quality aluminium alloy, matte black, anti-, corrosion-resistant, durable and not easy to break. There are no sharp edges and it will not hurt your hand. The scale is clear and accurate, and the value is clear at a glance. Easy to use, exquisite workmanship, long service life. Accurate clear scale: the set square metal carpenter's angles are calibrated before production by . Many professional tests show that the scale is accurate and reliable. The scale lines are laser-printed, which is clearly visible, easy to read and does not wear out for long. Special pencil: the triangular square for woodworking. Press to use to protect the lead that will not break when not in use. The pencil leads are thick and the drawn lines dark, which can play a good role when marking woodwork. colour: black + blue Material: aluminum alloy Package Contents: 1 x protractor 1 x Mechanical pencil 1 Pack x 2 mm diameter Refill 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.