2PCS Boshiho Micro-Fiber Magnetic Ammo Ring Adjustable Slingshot Ammo Pouch Ring Boshiho slingshot ammo ring made by micro-fiber Package: Magnet ammo ring *2 This is a small magnet ring with strong magnetism can carry about 15 8mm slingshot ammos The size of the ring can be adjustable, suitable for 17mm  23 mm diameter fingers. This width of this ring is 11.8mm Very suitable for the people who likes outdoor activities