Features: brand new and high quality The transistor set is made of top standard materials. It has high electrical strength, fast switching speed, high power dissipation and good current performance. No bending pins, quality assurance. The complete original transistor is packed in a convenient and sturdy plastic storage box with compartments for different parts, which is convenient for transportation and can be reused many times. Products include a large selection of widely used power transistors, you will need these products in audio and video, DIY electronic products and vehicle maintenance projects. Fast speed, small size and long service life. BC327(PNP)BC337(NPN)BC517(NPN)BC547(NPN)BC548(NPN)BC549(NPN)BC550(NPN)BC556(PNP)BC557(PNP)BC558(PNP) Specifications: Material:ABS Length:Approx. 17cm/6.69inches Width:Approx.10cm/3.9inches Footprint: TO-92 Quantity: Each 20pcs Package Includes: 1 Set Transistor Assorted Kit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.