The Libec FT-20J is a heavy duty tripod and is ideal for educational and institutional users. The Libec FT-20J Tripod can be used with either the H60, H70, H85 or H100 Tripod heads. Alternatively, the Libec AD75 Adaptor Ring allows Libec''s 75mm heads (H22DV, H38 and H55) to fit this 100mm ball diameter tripod.