[Support and Stabilize]: The finger splint effectively straightens and immobilizes the full finger knuckles while protecting the finger and thumb joints [Indications for use]: Finger extension splint helps reduce tightness of PIP joints, flexion staining and corsage deformities; maintains assisted extension at PIP joints while allowing active flexion, can be used for soft tissue injuries affecting PIP joints, and possible flexion deformity [All sizes of finger joints]: Size S: Indicates below 5.5cm below, Size M: Indicates finger circumference 5.5-7cm, Size L: Indicates 7cm above 7cm; Choose from 3 sizes to fit your finger joint size all changes 1. Coil Spring Design: The Finger Extension Splint has a coiled spring that provides dynamic extension while allowing active flexion; the coil springs are placed on both sides of the PIP joint for balance and strength. 2. Usage: It is suitable for various reasons of joint expansion dysfunction in jurisprudence. 3. Practical support: suitable for PIP joint buckling contract. Provide some MP support. 4. Soft EVA Pads: Curved proximal and distal pads distribute pressure evenly. 5. Spring coil expansion splint: Rely on the elastic force of the spring to straighten and fix the finger. At the same time, the fingers can be strongly bent and can overcome the force of the spring for rehabilitation. Material: EVA and stainless steel Scope of application: Suitable for insufficient straightness or bending of fingers after finger injury or long-term arthritis. Applications: Sprained fingers, fracture fixation, underextended fingers, hammer fingers, tendon ruptures, etc. Dimensions: Size S: 5.5 cm / 2.2 inches below the indication Size M: Finger circumference 5.5-7cm / 2.2-2.8 inches Size L: indicates that the circumference is higher than 7 cm / 2.8 inches