Matrix Freeflow Double RollerAvailable in two sizes Standard and Double Unique push button 180 rotating leg mechanisms Leg mechanism allows the legs to be locked in 3 angled different positions Mini folding leg spikes allows roller to be use flush to the ground Enlarged triple extending legs Standard Roller max height 630mm Double Roller max height 745mm Both rollers compatible with the Freeflow leg extensions Oversized leg extrusions for extra durability and stability Extruded