TT2 - The robust curtain tracks with non-jamming guide-roller runners. Always on the roll Do you dislike grinding noise and loss of energy through friction as much as we do? In that case the TT1&TT2 curtain tracks with its runners (Patent protected) and master runners are the right solution!! Are you still greasing or already rolling free? All pulleys and cable guide-rollers are made from a self-lubricating high-chem plastic. You can rest assured that they require no maintenance and will always run smoothly. Greasing was yesterday – today belongs to maintenance-free high-chem plastic!!