Velbon AMZPHD-66Q AZ 3-Way Head with Revolving Mechanism that can be converted to vertical position while reducing optical axis shift, made of magnesium, compatible with QRA systems : Amazon.sg: Electronics,Amazon | Velbon 3Way雲台 PHD-65Q II 中型 底面径52mm クイックシュー対応 マグネシウム製 481702 | 雲台・ヘッド 通販,Velbon PHD-66Q 3-Way Tripod Head,Amazon.com : Velbon 481924 PHD-66Q 3-Way Head Head, Medium Type, Bottom Diameter 2.0 inches (50 mm), Revolving Mechanism, Quick Shoe Compatible, Magnesium, Black : Electronics