Show your authority with the adjustable Wooden Humbler from Kiotos. This ingenious design forces your partner into a bent, kneeling position, with their genitals stretched and held firmly in place. Thanks to the adjustable wing nuts, it fits perfectly under the buttocks for optimal control and comfort. Weighing 430 grams and made of sturdy wood, this device offers an intense experience that your subject will not soon forget. Are you up for the challenge?