CENTURY SWIFT BELL MIXER SET Use on: Swift NX (replacement part) Swift Scale Mechanics (replacement part) Swift RTF (replacement part) Swift P&P (replacement part) Swift 550 Carbon (replacement part) Swift 16 (replacement part) Includes: 2 Bell Mixer Arms 2 pcs out of M3x16 SOCKET HEAD CAP SCREWS [CNM3X16CS] 2 pcs out of M3x5x2 SPACERS [HW6206] 1 set of STAINLESS BALLS, 3mm THREAD, SHORT [CNLR1014]