Features:

• Underwater noise maker signaling shaker.
• Made from resist rusty 316 stainless steel.
• Aviso allows you to keep contact with your buddy.
• Great to call your students in your courses or clients in guided tours.
• The metallic sound does not disturb the fishes or other divers.
• Size: Tube Diameter 6/8" x 6' 1/4" (Not include split ring).

Description:

Ever have trouble getting your buddy's attention over the bubbles and noise underwater? This is the best device we've seen. It needs no air, no power and louder than any air powered or plastic tank banger we've used. Its used by all our instructors during classes. Its a stainless steel tube with two steel bearing sealed inside. Its loud, persistant rattle will get anyone's attention, when shaken and even louder when you hit it against your tank. Its a good multipurpose device, since most divers carry shears instead of knives, we don't have the butt of a knife ot hit against our tank anymore. Keep your buddies organized and alert with our stainless steel signaling shaker.