This is a Jamar Grooved Pegboard, specifically model 7446, used in occupational and physical therapy to improve finger dexterity and visual-motor coordination.The board features 25 holes (24 pegs are included) with randomly positioned slots that require specific rotation of the pegs to insert them.This device is often utilized to measure performance speed during fine motor tasks.The pegboard is constructed of plastic, and replacement peg sets are available for purchase.