Includes a 3-speed rotary switch and mounting kit with an 18-tooth sprocket. The indestructible hub has been manufactured almost unchanged for nearly 100 years. It features a steel housing with a silver matte finish. The weight options are 1050 g or 1350 g. The overall gear ratio is 177%, with gear ratios of 75% for 1st gear, 100% for 2nd gear, and 133% for 3rd gear. The axle is designated HSJ 125, and the rotary switch is HSJ 762. Specifications include a 36-hole design, a clamp width of 109 mm, and an axle length of 146 mm. The axle overhangs are 20 mm on both sides. The axle diameter is 13/32", with a pitch circle diameter of 65 mm and a hole spacing of 12 mm. The flange distances total 55 mm, with the right flange measuring 29 mm and the left flange measuring 25 mm. The diameter of the spoke holes is compatible with 14G spokes (2 mm). The steel hub body is gray painted and includes accessories.