-Material: Stainless steel.

-With wide expansion screw holder.

-Skeleton design.

-Guide pins: U-shaped, angulated facing down.

-With expansion screw key straight, small – standard.

-Indication: for movement of individual teeth.

-Directional arrow printed, blue-yellow.

-Maximum expansion 4.0 mm. -4 x 1/4 turn= 0.35 mm.