O'Connor dexterity tests involve placement of pins into holes. 2 Models Available See Below... Quantity: 1 Size: 21" x 2" x 12" Manufacturer: Fabrication Enterprises Inc. Options:O'Connor Finger Dexterity:The O'Connor finger dexterity test requires hand placement of three pins per hole. It has been successfully used as a predictor for skills involving rapid manipulation of small objects. Board has 100 holes.Size: 21" x 2" x 12"Weight: 4lbs(12-3020) UPC: 714905045669 O'Connor Tweezer Dexterity:The O'Connor tweezers dexterity test requires the placement of a single pin in a 1/16" diameter hole with tweezers. A high score indicates manual aptitude for work involving precision. This 100 hole board includes 1 tweezer, 100 pins, and a detailed examiner's manual.Size: 21" x 2" x 12"Weight: 4lbs(12-3030) UPC: 714905045676 105-piece Replacement Pin Set:Extra parts for the O'Conner finger and tweezers tests: 105 extra pins.(12-3031) UPC: 714905045683