Built to deflate or “fizz” the swim bladder of the fish, theFishlife Fizz Needles provide surgical-grade sharpness that will help keep your catch alive – and hopefully your shot of cashing a check as well. Made to the specifications of the Texas Dept. of Parks and Wildlife, the 2 pack of Fishlife Fizz Needles are perfectly sized at 18-gauge x 1 1/2", making them easy to use and easy on fish.