13&rdquo; Quad Speaker Stands (Pair) - Universal Heavy Duty Steel Base Top Plates & Vertical Columns w/ Adjustable Spikes Perfect for Home Surround Sound System Bookshelf & Satellite Speakers - Pyle PSTND18 13 STEEL CONSTRUCTION: One pair of 13 speaker stands for a large bookshelf speaker can be easily placed in around any corner. It weighs 5.8 lbs for each speaker stands. Perfect for home, theater or professional recording studio VERTICAL COLUMNS: The heavy duty vertical columns are steel construction with an attractive design that conceals cables for a great looking stand setup. The columns may load with sand to deaden surround sound and increase stability with black finish HEAVY-DUTY BASE PLATE: It has 8.3'' x 11.3'' base plate to support solidity and optimal balance for speakers up to 35 lbs. Along with the top plate, 7'' x 9.5'' dimension, it also provides safe and secure bolt-mounting for many of today's speakers ADJUSTABLE SPIKES: Pyle speaker stands feature adjustable spikes for a heavy-weight speaker that provides superior stability on any surface. The quad-support provides security and strength with style EASY TO ASSEMBLE: Pyle made sure that these speaker stands comes with necessary hardware for a hassle free assembly and mounting. More importantly, the company included an assembling manual for clear and precise preferences to use the stands