Features: 1)The QSM-150 is able to grind slab with measurement up to 3000mm ×1500mm while the QSM-200 is able to grind slab with measurement up to 3000mm×2000mm. 2) The worktable can turn the workbench to an angle.(Made to order) 3) Air pressure The technical data of QSM-150/200 are as follows: NameMain motor power Rotating speed vertical stroke Max. processing length Max. processing width Dimensions (LxWxH) Unitkwr/minmmmmmmmmQSM-15015540120300015006000x3000x2100QSM-20015540120300020006000x3400x2100