Adapter For On-Stage M20 Subwoofers In Black (Ssa21).

The On-Stage SSA21 Subwoofer Adapter's female M20 threading attaches to M20 speaker shafts to accommodate virtually any subwoofer on the market, utilizing both removable M20 threading and a tapered, zinc-lugged lower section to accept 1 " cups. Whether it is a shallow M20, recessed M20, 1 3/8 cup or 1 3/8" cup with M20, the SSA21 will fit your subwoofer.

• Provides speaker shafts with M20 universal subwoofer adaptability
• 1 3/8" taper and removable M20 lug eliminates wobble and makes for a universal fit for all subwoofers on the market
• Solid steel construction
• item package weight: 1.0 pounds