Axcel AVX-31 Ranger Fiber Optic Ring Pin 1601672 Green/Red. 010 or 0.019 dia fibers. These rings include two pins as part of the ring that allow the shooter to change colors and pin diameters as needed. Each type of ring has specified pin colors and scope diameter. Specifications for Axcel AVX-31 Ranger Fiber Optic Ring Pin 1601672: Manufacturer: Axcel Color: Red Green Features of Axcel AVX-31 Ranger Fiber Optic Ring Pin: 0.010" dual pins Green Red pin colors Designed to fit the AVX-41 scope Rheostat ring Package Contents: Axcel AVX-31 Ranger Fiber Optic Ring Pin Axcel AVX3-RRPRH10-GRRD: AVX-31 Ranger Fiber Optic Ring Pin 1601672 Green/Red