The QSC CASTER KIT-S is a 4-pack of 3-inch caster wheels in the 2 x 1.7 inch (76 mm x 44 mm) mounting bolt pattern for all QSC KS Series (KS112, KS212C), KW181 and KLA181 subwoofers (all items sold separately).
The soft, non-locking, super-quiet caster wheels quickly slip into to the base of QSC KS Series and KLA181 subwoofers to allow easy transport on stage or in the studio and they won't mar floors!