YEESAM Deluxe Wing Chun Training Ring - Bamboo Rattan/Stainless Ring Yongchun Yewen Sau Sticky Hand Leg Strength Training Tsun Siu Lum Kung Fu Rings Taiji Registered Brand: YEESAM. Registry done with Amazon. Unique package with our logo - YEESAM Rattan Ring inner diameter: 175/215/345mm. Steel Ring inner diameter: 215mm Pipe diameter: approx. 20mm. Smooth unexposed joints. Sold as singles Worn for wrist/leg weights during forms practice to toughen up the forearms /legs We strive for 100% customer satisfaction. Your positive feedback with 5-Star will be greatly appreciated! If any problem, please contact us before any harmful action to be taken. We will give you a satisfactory solution as promised