Usage Tips:Note: It is the upgrade version. Not the same shape as the old one. Features: Futaba 37.2g servos are your easiest and most efficient way to upgrade your Futaba system. No other system provides you access to as many different sizes, shapes and functions as Futaba. The performance and reliability of our servos have made them the favorite choice of professionals including top RC competition specialists and motion picture special effect artists. SMT Contruction - Surface Mount Technology improves reliability in applications where there is vibration. Impact Resistant, Fuelproof Case - High impact plastic is designed to withstand minor crashes and the effects of model fuel. Through-the-hole Circuit Board Plating - Eliminates the need for wires or leads. Heavy Duty Output Shaft - Designed not to break, and offers versatility when installing the servo horn Nylon gears. Specifications: Speed:0.23 sec/60 @ 4.8V; 0.19 sec/60 @ 6V. Torque:44 oz-in (3.2 kg-cm) @ 4.8V; 57 oz-in (4.1 kg-cm) @ 6V. Dimensions:1.6 x 0.8 x 1.4 in (1-9/16 x 13/16 x 1-7/16 in) (40 x 20 x 36 mm). Weight:1.3 oz (37 g). Connector:"J" type with approx. 5 in lead. Package: 1x S3003 standard servo. 4x Brass eyelets. 4x Black rectangular rubber grommets. 4x Servo mount screws (4). 1x Servo wheel 1.375 in (35 mm) in diameter. 1x X-shape servo arm 1.5 in (38 mm) across. 1x Star shaped arm 1.25 in (32 mm) across