This combination of the Boss Adapter and the Arca & Manfrotto Compatible Clamp will fit virtually any Manfrotto ball head and produce a head that is Arca & Manfrotto RC2 compatible.Own a Manfrotto 484, 486, 488, 494, 496, 498, 054, 055 and 057 series ball head and wish to use AS (Arca-Swiss) compatible system and reserve RC2 system? The Haoge Female to Male Boss Adapter and Arca & Manfrotto Compatible Clamp allows you to more easily replace the clamp on your Manfrotto ball head.Features for Arca & Manfrotto Compatible Clamp:Arca-Swiss & Bogen 3157N compatible.Manfrotto 200PL-14 RC2 compatible.Fast loading base with antiskid lock function.Aluminum alloy, CNC precision machining.Size: 107x51mmClamp with 39mm AS standard interface, compatible with all Acra-Swiss Style quick release plate such as RRS / ARCA-SWISS / KIRK / Wimberley / MARKINS / SUNWAYFOTO / Kangrinpoche / BENRO / SIRUI...Compatible with Manfrotto 200PL-14 RC2 & Bogen 3157NFeatures for Boss Adapter:Ideal for Manfrotto ballhead.Adapter allows you to replace the original clamp.It keeps the quick release clamp from turning, and holds it solidly in place.The Boss Adapter has a ridge on one side which fits in the groove on the underside of the quick release clamp, and a ridge on the other side which fits in the groove on the Manfrotto ball head.Installation Steps:First, remove the platform from the ball head by unscrewing the single M6 that secures it to the ball stem. Once the platform was off, aligned the clamp and boss adapter with the bosses, dropped in the M6 screw and tightened it.Package included:1 x Haoge CP-MAS Arca & Manfrotto Compatible Clamp1 x Boss Adapter1 x Hex Key1 x Mounting Screw(Please note: The Manfrotto Ballhead and Plates are not included and are showing for illustration only.)