The analog HS-225 series represents a good value with performance that rivals other larger and more expensive servos. Ideal for applications that call for a small, lightweight, high speed, high torque servo, the HS-225BB and HS-225MG high performance mini servo's feature a top ball bearing and is built with state-of-the-art SMT technology. Motor Type: 3 Pole Bearing Type: Top Ball Bearing Speed: 0.14 / 0.11 sec @ 60 deg. Torque: 54.15 / 66.65 oz.in (4.8v/6v) 3.9 / 4.8 kg.cm Size: 1.27" x 0.66" x 1.22" 32.40 x 16.80 x 31.00mm Weight: 1.09oz 31.00g