Power HD TR-4 Micro Metal Gear Digital Servo Waterproof , Replacement for Trx-4 , Summit.

This is the Power HD 16g Metal Gear Digital Servo, a high quality metal gear servo built for ultimate reliability in rough conditions. The TR-4 is Replacement for Traxxas Trx-4 & Summit.

Specifications:
Torque @ (4.8V): 1.8 kg-cm (25.0 oz/in)
Torque @ (6.0V): 2.2 kg-cm (30.6 oz/in)
Torque @ (7.4V): 2.6 kg-cm (36.1 oz/in)
Speed: 0.15 sec (4.8V) │ 0.12 sec (6.0V) │ 0.10 sec (7.4V) 
Operating Voltage：4.8 ~ 7.4 DC Volts
Weight: 16.0 g (0.56 oz)
Gear Type：Copper & Alu
Operating Temperature: -20℃~60℃
Working frequence：1520μs / 50hz
Size：22.5 x 12.5 x 24.0 mm ( 0.89 x 0.49 x 0.94 in)