The high quality, colour printed plastic sign board with dimensions 240 x 170 mm is fixed on the inside window with 4 suction cups (D: 12 mm), (1 spare suction cup inclusive). With only 0.7 mm thickness the PVC sign board is extremely flexible and adapted for all inside windows. The locksmith may write his mobile phone number on the board to avoid possible towing in case he has to park in a no-parking area. The sign board can only be sold to locksmiths!