Product Feature : 1. Use double contact technology , contact more stable , 2. The socket shell use engineering plastic , high strength , long mechanical life , 3. The shapnel use import beryllium copper , small impedance , good flexibility , 4. Coating with tick gold plating layer , contact ticken electroplate , lowest contact resistance , high reliability . Product performance : Electrical Specification : a) Insulation resistance : 1000m Min,At DC 500V b) Voltage resistance : voltage resistance c) Contact resistance : 25m d) PIN feet : 55g/PIN(Normal) e) Mechanical life : 100000Times f) Operating temperature : 65 degree to 55 degress g) Operating force : 0.9kg Max color: Black : plastic + metal Specification : a) Type : TSOP 56-0.5 b) Pin pitch : 0.5 mm c) Pin Count : 56 d) Applicable Chip Dimension : 14.2 x 18.4 mm (does not include the pin length) Package Contents: 1 x Tsop56 chip test socket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.