The Slide System is a great choice for facilities on a budget! Slide collars allow infinite net height adjustment for junior high, NFSHA, NCAA and USVBA specifications. Both systems offer the exclusive worm gear winch net tightening system found on the Elite systems for the ultimate in safety and ease of operation. Uprights can also be used for badminton and tennis. Antennae with plastic clamps included. SS100 and SS200 packages include nets and protective pads.