The Manfrotto 500 Pro Fluid Video Head with Flat Base is a lightweight head with large platform base and is suitable for HDSLRs weighing no more than 5kg. The side lock system allows the camera and sliding QR (Quick Release) plate to click quickly into the head from above, instead of needing to be aligned and slid in from the back. The 500 has a pre-set counterbalance of 2.4kg, but is able to support equipment of up to 5kg. The 500 has one Easy Link 3/8" connector to allow an external monitor or other accessory equipment to be fitted. The Manfrotto 500 is the successor to the 701HDV video head.