This is the Arrma BLX85 Brushless ESC.

Features:

• Gold plated bullet connectors for ultimate power conductivity
• Heatsink helps to dissipate heat during extreme operation
• Durable case with hold down tabs for secure fitting in chassis
• Waterproof switch
• LiPo and NiMH cutoff to protect batteries
• 6V BEC
• Forward, brake, and reverse throttle modes
• T-connector for battery

Includes:

• Arrma BLX85 Brushless ESC with all Connectors

Specifications:

• Continuous Current Capacity: 60A
• Compatible Batteries: 6 - 7 Cell NiMH (7.2 to 8.4V), 2 - 3S LiPo (7.4 - 11.1V)
• Low Voltage Cutoff: 3.3V per cell
• Thermal Protection Temperature 221F (105C)
• Over-Voltage Protection: Over 3S LiPo (11.1V)
• Brushless Motor Limit: 5000Kv
• Recommended Battery Specification: 4000mAh - 25C minimum 2S or 3S battery pack
• BEC Voltage: 6V
• BEC Current: 3A
• Burst Current: 420A
• Length: 1.69" (43mm)
• Height 1.18" (30mm)
• Width: 2.15" (54.5mm)
• Weight 3.49oz (99g)
• Receiver Wire Length 6.69" (170mm)
• Battery Wire Length 5.91" (150mm)
• Motor Wire Length: 6.3" (160mm) including connector
• Switch Length: 0.83" (21mm)
• Switch Width: 0.52" (13.3mm)
• Switch Height: 0.63" (16mm)
• Bullet Connector Size 0.16" (4mm)
• Wire Size: 12AWG
• Battery Connector: T-connector