28-17452 - TowerPro SG-5 Standard Servo
This high-torque standard servo can rotate approximately 180 degrees (90 in each direction).
Mfr Name: Adafruit Industries
Mfr Number: 155
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3990298000 - 46.08mhz X'tal Avp8000
46.08MHZ X'TAL AVP8000 SG-531PH(46.08MHZ)
Mfr Name: Denon Electronics
Mfr Number: 3990298000
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MCM is a great company with a large selection of good quality products.