JBL's WK-4 Wheel Caster Kit for SRX718S and VRX918S improves the mobility of your speakers by putting them on wheels. These swivel casters are designed specifically for the SRX718S and VRX918S speakers and the speaker enclosures come pre-threaded for easy and almost instant installation.
Improved Mobility
By adding casters to your SRX718S and VRX918S speakers you get ease of mobility, and the pre-threaded enclosures make installing a snap.