Seac Sting Sling Spear Guns represent top-level simplicity, practicality, and versatility. They are incredibly well made for an entry level gun and have superb accuracy and power characteristics. They are amazing value for the money and the perfect spear gun for those new to the sport. As with all Seac spear guns you'll find that the sting models are perfectly balanced and are easy to handle, load and fire. Barrel is made from extruded anti-rust aluminum to maximize corrosion resistance and prevent bending. Double muzzle design allows mounting of one or two slings. Handle is a new anatomic grip and gun is equipped with a sternum rest for easy, comfortable loading. Line release trigger and safety in high-strength, shockproof nylon. Trigger mechanism is made from stainless steel and filled polyamide to ensure the utmost functionality and reliability. Sling is made from amber colored latex, with a 16mm [0.63] diameter. The guns shaft is a PR80 treated steel with a 7mm [0.28] diameter and has 7mm [0.28] thread pitch M7. Line attachment system directly attached to the shaft like on professional models. The Seac Sting Sling Spear Guns comes with a nylon/polyester line, and 7M thread single flopper barbed tip. The spear gun is available in multiple lengths depending on your spear fishing needs. Gun is available in a 35cm, 45cm, 55cm, 65cm, 75cm, and 85cm [13.79, 17.7, 21.65, 25.6, 29.5 and 33.5] lengths. The corresponding shaft lengths are 50cm, 60cm, 70cm, 85cm, and 95cm [19.7, 23.6, 27.26, 33.5 and 37.4 with slings measuring 12cm, 14cm, 16cm, 18cm, and 20cm [4.7, 5.5, 6.3, 7 and 7.9].