This is a unique design splint-Dynamic action. Made from spring coil both sides of finger extended wire bilaterally with 2 dorsal support to the finger & 1 palmer support at the head of metacarpal. Spring action of coil ensures gentle, sustain extension force at PIP. it Hook loop Velcro straps provides easy fitting Used To release contracture at DIP it in Hand injury case, Post Fracture shiftiness.