Specification Brand : QANYEGN BulletPoint : Troemner ASTM Class 1-4 offer high accuracy with tight tolerances and uncertainties of less than 1/4 of the tolerance. Weight surfaces meet or exceed ASTM and have a highly polished finish. Available in high grade stainless steels including Troemner Alloy 8 which possesses closely controlled density, extremely low magnetic properties, good stability, and resistance to corrosion. BulletPoint1 : LONG LASTING: The metal weights with hooks are made from sturdy materials that are stand up to frequent use. This durability ensures that the weights will last for a long time, making them a great addition to any physics lab. BulletPoint2 : HUMANIZED DESIGN: The metal weights with hooks are simple in construction and easy to operate and maintain. This user-friendly design ensures that both teachers and students can use the weights with ease. BulletPoint3 : VERSATILE HOOKING SYSTEM: Each metal weight with hook features a double-ended design with a hook on one end and an iron ring on the other. This innovative design allows for continuous hooking, making it easy to attach and remove weights as needed during the course of an experiment. BulletPoint4 : PORTABLE PROTECTIVE CASE: Metal weights with hooks come with a sturdy plastic case that ensures safe storage and portability. This protective case keeps the weights organized, safe and secure, making it easy to transport them to different locations for experiments. BulletPoint5 : IDEAL FOR EDUCATIONAL USE: Metal weights with hooks are great for conducting experiments in general and secondary technical schools. Designed for group experiments, this set allows students to actively participate in scientific exploration, develop hands-on learning experiences, and enhance their understanding of physics and scientific principles. ItemName : QANYEGN 10 Pcs Metal Weight with Hooks, Double Hooked Weight, Hook Weight for General Science and Physics Laboratory Work ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 11 centimeters ItemPackageDimensions_Width : 7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : calibration-weights Manufacturer : QANYEGN ModelNumber : QANYEGNsyze56mpgh NumberOfItems : 1 PartNumber : QANYEGNsyze56mpgh ProductDescription : Specification: Item Type: Weight Weight: 50g