Construction: the lab slotted mass set is and built to last, offering long term reliability for laboratory use. Package : The set includes a range of slotted masses, along with a hanger and storage box for easy organization and transportation. High Accuracy: With a 2percent accuracy level, this mass set provides precise measurements for balancing tests and weight determinations, ensuring accurate results in scientific experiments. Versatile Design: The small weight is suitable for studying pressure, force, and torsion in classroom or laboratory settings, making it a practical tool for science experiments. Colour:silver Material:steel Package Contents: 1 x 200g Slotted Weight 2 x 50g Slotted Weight 2 x 20g Slotted Weight 1 x 10g Slotted Weight 1 x Hanger 1 x Storage Box 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.