KASTFORCE KF2001 Universal Mobile Base 450Lbs Loding Capacity Make Your Tools & Equipment Movable 450 Lbs 200kgs) Loading Capacity Universal Mobile Base Expands from 12 x 12(305mm x 305mm) to 27 x 27(685mm x 685mm) square, 17"x37" (430mm x 940mm) rectangular Side Rail 12"(300mm) 3 diameter swivel wheels and supporting wheels Easy operated lock system to lock machines to the floor