Orthodontic Expansion Screw Medium 100pcs

Orthodontic expansion screw made of stainless steel with cone-shaped holder and skeletonized body design. Features cross holes in the screw body for optimal retention in acrylic, built-in stops to prevent over-expansion, and directional marking arrows. Provides maximum expansion of 7.5mm with 0.80mm activation per full turn (4 x 1/4 rotations), suitable for transverse expansion and distalization of upper and lower jaw. Package contains 100 pieces with included expansion screwdriver.