Sturdy & Secure:Drilling hole phone holder articulating magic arm and base are aluminum alloy material,the balls joint of arm are metal,top of arm ball head is stainless steel,durable and rust-proof, phone clip are ABS and spring material,equipped with built-in anti-skid rubber pad,reduce scratches,antiskip,phone clip hold cellphone firmly and secure,the arm is sturdy enough to load 3.3 lbs / 1.5 kg capacity. Flexible Adjustable:Phone bracket arm has 2 ball joints,allowing to both of ball joints 90°tilt freedom by twisting joint knob,meanwhile arm can be folded and stretched,also twisting joint knob to lock both of ball joints,stainless steel ball head of arm support phone clip 360°rotation flexible,it's easy for customer to adjust cellphone angle. Simple Installation:Phone mount arm length is 10 inch / 25.5cm,base pedestal diameter is 1.57 inch / 4cm,plate pedestal was designed to 4 screw holes,Mippko provides screw accessories for customer,it's easy for customer to