Made of high quality Aluminum, good thermal conductivity | Reduce the risk of hardware failure due to overheating | Maximize surface area Designed in contact with the cooling air. The 16 pcs fins increase the area of the board and thus provide for greater heat transfer | Widely use for computer, Power Transistor, FET, IC, Power Amplifier, Voltage Regulator, MOSFET, SCR etc. | Size: 4.7"(L) x 3.93"(W) x 0.7"(H) /120mm(L)x 100mm(W) x 18mm(H). Please make sure that the size of the heat sink fits that of your component

Made of high quality Aluminum, good thermal conductivity | Reduce the risk of hardware failure due to overheating | Maximize surface area Designed in contact with the cooling air. The 16 pcs fins increase the area of the board and thus provide for greater heat transfer | Widely use for computer, Power Transistor, FET, IC, Power Amplifier, Voltage Regulator, MOSFET, SCR etc. | Size: 4.7"(L) x 3.93"(W) x 0.7"(H) /120mm(L)x 100mm(W) x 18mm(H). Please make sure that the size of the heat sink fits that of your component

Telephone adapter type : 4 pin rj11 socket to 4 pin rj11 plug | 1 male to 2 female dual socket phone line splitter, 6p4c rj11 plug | Durable plastic adapter with high quality 4 pin each socket | Easy to use telephone adapter, suitable for standard phone cable | Package include 2 adapter, 12 months warranty, easy to reach friendly service within 24 hours