Freediving Ear Alignment Exercise Aluminum Ear Exercise Gold Description: [Diving Ear]: Ear alignment training tool, practicing ear for freediving/diving underwater hunting, can practice ear alignment anytime, anywhere. [Premium Material]: Freediving ear alignment is made of aluminum alloy, durable, stable, high quality and can be used for a long time. [Lightweight and small size]: diving ear alignment measures 6cm x 2,2cm/2,36inch x 0,87inch, hole diameter: 0,4cm/0,16inch, lightweight and compact size, easy to carry and store. [Widely used]: The free diving ear is a practical auxiliary tool, very suitable for beginners and professional divers and underwater sports, scuba diving or free diving. Specifications: Material: Aluminum Alloy Size: 6 cm x 2,2 cm/2,36 inch x 0,87 inch Hole diameter: 0.4 cm/0.16 inch The package includes: 1 Ear correction during free diving