Specification Brand : WXLWEW BulletPoint1 : Beginners and seasoned electronics experts alike will love the variety of components and organization included in this kit. BulletPoint2 : It looks like a book, call it a sample book. BulletPoint3 : The book cover is 7.6*5.4 inches , which is the same size as a regular book. Small but puts everything in its place. It saves space and is easy to carry. BulletPoint4 : Each paper leg is clearly labelled on the front and back and never gets messed up. BulletPoint5 : With the characteristics of fast response and high frequency, it can be applied to many high-performance circuits. Color : One Color ItemName : SOT-23 21Values SMD SMT NPN PNP SOD 5401 2222 3906 9015 8050Transistor and Diode Assortment Book Kit(21values-50pcs) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : zener-diodes Manufacturer : WXLWEW ModelNumber : IIDASSIEX-21VALUES-50PCS NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : IIDASSIEX-21VALUES-50PCS ProductDescription : The specifications are as follows: Each value is 25/50 pieces, all 21 pieces in one package. ProductSiteLaunchDate : 2025-05-09T10:37:48.391Z Size : 21values-50pcs UnitCount : 1 UnspscCode : 32111500