Description: 2 Pieces pulley with rope, support bracket and base mount Use 1 pulley can study fixed/mobile pulley's work Use 2 pulleys can study pulley system's work For educational or laboratory use Used for physics force teaching/experiment, classroom etc. Specification: Material: Plastic, metal Support Bracket Size: Approx. 32.5 x 7.7 x 0.5 cm Base Mount Size: Approx. 15.5 x 7.5 x 1.7 cm Color: Yellow Package Includes: 2 Pieces Pulley 1 Piece Support Rack 1 Piece Base Mount 1 Piece Rope Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!