This item is made from silicon material, a semiconductor device that control current, which can amplify current, is the core part of electronic circuit, also be used as a non-contact . Well packed and assorted in a compact storage case. Features - Color: Assorted. - Material: Silicon. - Size: About 17.00X9.70X2.20cm/6.68X3.81X0.86inch. - Model: S9012, S9013, S9014, S8050, S8550, 2N3904, 2N3906, BC327, BC337, TI431, MPSA42, MPSA92, A1015, C1815, 13001. - Ergonomic design, easy to use and install. - Well packed and assorted in a compact storage case. - Made from silicon material, a semiconductor device that control current. - Fine craftsmanship and details ensure its practicality and popularity. - Can amplify current, is the core part of electronic circuit, also be used as a non-contacting . Package list: 300 X