The Monouchi is made of hardwood. Stainless Steel rivets dot the shaft. The Kusari is made of stainless steel and links at a ball bearing type Hoshi. The nunchaku was originally a farm tool, sometimes the rope or chain would be wrapped around a pulley to produce turning leverage. Later, it was used as a weapon in the absence of blade and bow weapons. Overall Length: 30.5 Inches. Monouchi Length: 11.25 Inches (Shaft). Monouchi Type: Natural Hardwood. Kusari Length: 7.75 Inches (Chain). Kusari Type: Stainless Steel Chain. Hoshi Type: Stainless Steel, Ball Bearing (Rivet End). Finish: Black Exterior, Urethane Coating. Design: Stainless Steel Rivet on Shaft.