Exquisite Material: The Diving Stick is constructed of 316 stainless steel material, which is durable to use.6MM Thread warp, hitting the air can make a , the surface is smooth and bright,practical and beautiful. Stylish Design: Contains steel balls, but the head of the stick contains steel balls, except for the sound of hitting the gas cylinder,shaking can also make a crisp sound, fashionable atmosphere. Self Contained Clear Scale: The stick body comes with a 15cm scale,accurate to the millimetre for underwater biological observation, so it is more convenient and simple to use. Main Function:The multi purpose feature makes it have a wide range of applications. It is used to tap the gas cylinder or shake the stick to make a sound when diving, so as to attract the attention of the diving , indicate the direction or object to the diving , and replace the hand to interact with the small creatures on the seabed. At times, it can be used to avoid special situations such as hitting the top to avoid , etc.And insert the stick into the crevice of hold it tightly to fix the body. Exquisite Craftsmanship: The bottom is finely polished, safe to use and easy to carry.A great gift for your friends who love diving. Specification: Material: 316 Stainless Steel Features: Anti rust, Clear Scale, Multifunctional Size Details: Size: Length x Width: 31.5cm x 2.5cm/ 12.40x0.98inch(Approx.) Wire Diameter: 0.6cm/0.24inch(Approx.) Scale: 15cm/5.91inch (Approx.) Package Includes: 1 Piece Diving Stick (with Lanyard) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on line shopping!