- optimal screw locking during the active treatment phase
- built-in stops prevent the screws from coming apart once maximum expansion has been obtained
- reliable activation/deactivation of the screw with a clearly perceptible click after a 1/4 turn
- no accidental reversing when pulling out safety key during activation
- minimal dimensions with a maximum expansion range
- permanently laser marked arrow on the body of the screw indicates the opening direction and max. expansion
expansion screws offer many advantages:
- Versatile, multi-functional expansion screw.
- Solder-free - little risk of allergies.
- Break-resistant retention legs.
- Laser markings of directional arrows and maximum expansion.