This is a must have for anyone with a pocket scale. This precision calibration set has all of the weights you will need and more, importantly they include a set of specially grooved pliers so that you can securely grip the weights without contaminating them with sweat etc Features: Weights securely held in a robust storage boxIncludes : 1 x 50g, 2 x 20g, 1 x 10g, 1 x 5gWeight Colour: SilverStorage Case Colour: BlueTotal Weight: 105gTop quality, Precision weightsMaterial: Nickel-plated steelClass: M2Permissible Error: /- 0.003 gramSpecially designed grooved tweezers to securely hold and move the weights for quick and easy use Specifications: Plastic storage case size: 68 x 45 x 35gWeight: 144g Includes: 1 x Plastic storage case1 x Pair of Tweezers1 x 50g Calibration Weight2 x 20g Calibration Weights1 x 10g Calibration Weight1 x 5g Calibration Weight