Signswise CYS-S8218 Digital Metal Gear High Torque Servo 1. CYS-S8218 Digital servo 2. Metal gear inside Specification: Weight:164g . Size:60*28*54mm ; Speed rate : 0.20--0.22sec/60at (6V) . 0.18--0.2sec/60at(7.2V) . Package Includes: 1X Digital Servo FREE SHIP from China via ePacket, usually takes about 10-15 business days for the delivery