The track design lets the user choose from an array of ports for precise placement. Once, the additional bars are in place the shifting of items becomes minimized.E-TRACK 5 FOOT ZINC, PK6 With a steel construction the track allows additional bars to be attached to it..
(Batteries not included.LIGHT & SIREN FOR SPRING LOADED BOLLARD Includes sensitive switches that will activate a strobe light and warning siren when contacted.