deetech Set of 2 steel tripod sleeves 100 mm installation depth. Inner diameter of the sleeve 35 mm. Fits all standard speaker stands or spacers. With 4 recessed holes, each 8 mm for fixing to the speaker. Painted black with scratch resistant paint. 100 mm installation depth 35 mm inner diameter 4 holes each 8 mm diameter black lacquered outer diameter flange: 110 mm weight: 360 g/piece required hole diameter drill hole: 40 mm