[Material]: The scuba diving regulator features a ABS shell that withstands impact without damage. Equipped with plated copper hose connection (Hose Included), ensuring reliable performance in underwater conditions [Advanced Air Balance Operation]: Designed for optimal performance, this diving 2nd stage regulator offers smooth air balance operation, making it ideal for both novice and experienced divers [Comfortable Mouthpiece]: The diving regulator equipped with a food grade silicone mouthpiece that ensures a secure fit during dives, allowing for extended use without discomfort [ and Easy to Clean]: With its design and easy to clean housing, this regulator is convenient to handle and maintain during your diving adventures [Application]: Measuring 8cm in diameter, the compact design of this regulator makes it and transport. The scuba diving second stage regulator is great for driving and Specification: Material: ABS Shell, Plated Copper Hose Connection, Silicone Mouthpiece Size Chart: Diameter About 8cm/3.15inch The Total Length Is About 87cm/34.25inch Color: Yellow Package Contents: 1 Scuba Diving Second Stage Regulator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.