This is the easiest of the three boards because the driver covers the nut and will not slip. Four hexagonal-headed bolts and a hex nut driver (7"). Designed by a Montessori teacher to aid the development of eye-hand coordination and teach a practical skill. The board has two troughs: one to hold the bolts after the child has removed them and one for the driver. The bolts screw onto a long-lasting metal sleeve to prevent wood stripping. Boards measure 10½:" x 4" x 1¼" high.
Driver may vary.
