Are you looking for a set of professional, yet Physics experiment equipment? Are you in search of a sturdy, trustworthy tool that can help you? If yes, this is complete for you! Our professional pulley block set must meet your needs. Features -Color: assorted color -Material: metal and plastic -Size: About 35 X 20 X 9 cm/13.76 X 7.86 X 3.54inch - Note: Stopwatch is random style. - Made of metal and plastic, and practical. - Perfect for any home, school, or laboratory. - A fun way to introduce kids to operate the experimental equipments and have the experiments. - Sturdy and trustworthy tool that can help you to complete your task. - Improves kids' imagination through interactive play. Package list: 1 x counter 1 x set of weight 1 x tweezers 1 x dolly 1 x friction 1 x table 1 x sponge 10 x hook x measuring cylinder 1 1 x transparent cup 1 x handle 1 x heavy object 1 x small compressor 1 x latex tube 1 x liquid internal compressor 1 needle 1 x small needle 1 x force meter 1 x force meter 1 x pedestal 1 x aluminum alloy leverage 1 x 1 x holder 2 x single pulley 2 x double pulley 1 x cotton robe 1 x stop watch 1 x steel x product manual