This Router Table Lift is the ideal choice for your workshop! It has galvanized and non-magnetic top and bottom plates made of sturdy stainless steel and aluminum. Features Dimensions: Small 3.9 x 3.9" (10 x 10 cm), Medium 5.9 x 5.9" (15 x 15 cm), Large 7.9 x 7.9" (20 x 20cm) Height: Small 1.6-6.3" (4-16 cm), Medium 2.8-11" (7-28 cm), Large 2.8-11" (7-28 cm) Lifting capacity: Small is 5kg, Medium is 10kg, Large is 15kg Material: Aluminum, Stainless Steel Easy Turn Knob