DescriptionThis product is a tuning fork with hammer for physical acoustic experiment, made of high-class materials. It can serve you for a long time and is very durable. The design is simple, easy to use and operate. The technology has good class and better performance.Features-Color:Assorted Color -Material:Aluminium alloy, wood -Size:16.00X9.30X22.50cm/6.29X3.65X8.84in -Size:2.50X2.50X18.00cm/0.98X0.98X7.07in(Hammer) - This tuning fork in a wooden base is an easy but perfect experimental tool for physical acoustic experiment.- You can adjust the pitch of your tuning fork well, help your experiment performance to complete smoothly, or practice tuning fork perfectly.- Replace the old or damaged tuning fork with a new one, a very good multi-functional tuning fork hammer set.- Each tuning fork is equipped with a hammer that can be used together, a humanized tuning fork hammer set.- Teaching is simple and convenient, only need to gently tap can make a sound, very simple and practical.