The black 21445 Leveling Leg for Speaker Stand from Konig & Meyer is an adapter for leveling speakers on uneven surfaces such as stairs, steps, or sloped surfaces. It is attached to one of the stand's feet and can be used for stage, studio, or practice rooms. Additionally, the required leveling length is variable and allows a height adjustment maximum of 7.9". If the surface is even, you can leave the adapter in the initial position on the stand's foot. The leveling leg is compatible with the following K&M stands: 21300-009-55, 21302-009-55, 21435-009-55, 21436-009-55, 21460-009-55, 21460-009-76, 21460-009-81, 21463-000-55, 21467-000-55, and 24630-009-55. Material of Construction Steel Special Features Allows a height adjustment of 7.9" (20 cm) maximum Tubing Diameter 1.4" (35 mm) Diameter 1.6" (40 mm) Height 25" (65 cm) Weight 25 oz (0.7 kg) Packaging Info Package Weight 1.85 lb Box Dimensions (LxWxH) 28.3 x 2.6 x 2.5"