Product Features:1. Two hooks for convenient to hang pads or posters. Pentray at the bottom to put pens and erasers.2. High surface quality, perfect performance of writing and drywipe clean.3. Height adjustable and board rotatable for the most easeful writing angle and showing.4. Star base mobile design, easy moving to every where, 3 of the 5 lockable castors for stable standing.5. Being widely used in schools, offices, martket places for meetings and presentations.Product ID Description Material of Surface Pad clamp Material Writting Area (BxC mm) Min.Height (Amm) Max.Height (Bmm) Base Dia. (Dmm) SM-SPStandard mobile-Star Melamine Drywipe Plastic 975X66018002200680SM-SMStandard mobile-Star Melamine Drywipe Metal 975X66018002200680PM-SPProfessional mobile-Star Magnetic Drywipe Plastic 975X66018002200680PM-SMProfessional mobile-Star Magnetic Drywipe Metal 975X66018002200680