Hyperion Hi-Scale Aerobatic Spinners. Very light and true-running; made of tough ABS platic in a beautiful gloss finish. Available in RED. WHITE, and BLUE to match standard covering colors. Each spinner comes with two precision adapter rings to fit two sizes of collet adapters. For Hyperion ARF Aerobatic Models Use These Spinners HP-AERO-32 (1.25") CAP232-10 SU31-10 EXTRA-300-10 CHIPMUNK-10 HP-AERO-40 (1.6") YAK55SP-10 HP-AERO-52 (2.0") CAP232-25 3D SU31-25 3D Future 25-Class 3D models HP-AERO-63 (2.5") YAK54-40 3D Future 40-Class 3D models CHIPMUNK-70