Sturdy and attractive, the New Berlebach longer 5' Tripod is designed to fit the Vixen Porta II Head. This combination is a must for the serious astronomer. The Magnesium mounting head fits the Vixen Porta II Head. The Porta II Wood combination is very stable with excellent vibration damping.The tripod legs have no fixed angle stop. Leg spread is limited by triangle tray and steel chain, both included with the tripod.