The Jib Arm can Mount on the Tripod Head, and the tripod can be fixed on Dolly (EI-9911). Tripod and Dolly is in Included The

Material: Aluminum Head Attachment: D75mm D100mm video fluid ball or hemisphere headWeight Capacity: 15-18mmHeight Range:300-2650mmPan Range: 360°, Horizontal Extension: D3000mmCounterweight:30kgOuter packing:Carton box 152.5*28.5*40cm1 piece/carton49kgAccessory carton box33*30*31cm1 piece/carton31kg

Jib Arm