Kit consists of:
3x aluminum profile 20x20 I-type groove 5
12x Cutting sleeve for automatic connector I-type Nut 5
12x Special screw automatic connector DIN 912-M4x30 N5 I-Type
4x T-nut with spring ball, with guidance I-Type slot 5 [M4] (for the H-frame)
T-nut / slotted block for the wheel holder are NOT enclosed.