These metal scale weights with hooks are tailored for precision calibration and testing. Their stable designed ensures consistent performance, making them ideal for digital scale adjustments and laboratory experiments. The hooked feature allows for seamless integration into experimental setups, enhancing accuracy and reliability. Features -Color:Silver -Material:Iron -Size:3.60X3.00X3.00cm/1.41X1.18X1.18in -Reliable calibration standards: provides consistent and accurate weight measurements for laboratory and educational experiments -Stable metal build: constructed from stable iron materials that withstand frequent use and maintain precision over time -Userfriendly hook system: designed with practical hooks for quick and secure hanging during experiments or calibration -Flexible weight management: double hook designed enables easy adjustment of weight combinations for varied experimental needs -Broad usage scenarios: good for scientific research, classroom physics experiments, commercial applications, and daily tasks Package list: 6 x calibration weights