Wood Nuts and Bolts Toy with Pattern Cards - Montessori Wood Toy, Learning Toy, Fine Motor OT Busy Bag Therapy Toy This busy bag is perfect for toddlers, preschoolers, those with special needs and occupational therapists! use the large wood nuts and bolts to recreate one of the 16 included patterns. 4 large wooden bolts (3" long) and 4 wooden bolts (Both the nuts and the bolt heads are 1 and 5/16th inch) and 8 double-sided pattern cards (16 patterns total) You get 8 laminated cards professionally printed on 100# cardstock and laminated with 5 mil lamination. The cards are classroom tough. Cards measure 4.1"x 1.8" fine motor pincer grasp used in order to manipulate the nuts. Builds hand muscles and dexterity and utilizes both hands which are essential for a proper pencil grasp.