It has simple construction, high accuracy and stability. The rolling bearing keeps out of axial play. The rotation is from -10º to +90º in vertical direction. The worm gear is made of torn-resistant and good harness bronze. Swivel parts are lubricated for stable and flexible connect.Main parameters: Model: F12128 Center height: 128mm Spindle hole: MS4 Spindle thread: M41X2 Net weight: 36kgWe also have other models such as PF75/5C and PF100B/5C.