[. . . ] [. . . ] The 20NM is specifically designed for use with the Yamaha HS1100 or HS1000 Hi-Hat Stands. To obtain maximum performance and longevity from this product, please read this Owner's Manual thoroughly. Bolt w Washer Hi-Hat (optional) When attached to the hi-hat stand (HS1100 or HS1000), this product delivers improved foot pedal stability. Foot Pedal (optional) [Procedure] 1) Loosen the bolt q and wing nut. 5) After the position of the foot pedal has been determined, tighten the wing nut. 7) Finally, tighten the bolt w with the supplied L-shaped drum key. Bolt q Clamp Plate Wing Nut HS Frame Printed in Japan *Specifications and design are subject to change without notice. [. . . ] [. . . ]