Posterior Multiaxial Cervical Screw (Lateral Mass) Catalog No. : 9Ti.417.3510 To 9Ti.417.4020 Material : Titanium Diameter : 3.5mm, 4.0mm Size : Size Item Code Dia 3.5MM 10MM 9Ti.417.3510 12MM 9Ti.417.3512 14MM 9Ti.417.3514 16MM 9Ti.417.3516 18MM 9Ti.417.3518 20MM 9Ti.417.3520 Dia â?? 4MM 10MM 9Ti.417.4010 12MM 9Ti.417.4012 14MM 9Ti.417.4014 16MM 9Ti.417.4016 18MM 9Ti.417.4018 20MM 9Ti.417.4020