3545973C Model Code: AA (part# 3545973C) This item features: -Lobular design reduces stripping damage by driving the fastener on the sides instead of forcing the corners to turn. -For use with sheet metal screws and other hexagonal head fasteners. -Drive Size: 1/4 in (hex). -Type: Nutsetter Set. -Price is for 1 Each. Len. = Overall Length Len. = Overall Length Model Code Model Description AAOverall Length:1 7/8 in, Includes:(3) Mag. Nutsetters (94712, 94732, 94752) ABOverall Length:1 7/8 in, Includes:(4) Mag. Nutsetters (94712, 94732, 94752, 94772) ACOverall Length:2 9/16 in, Includes:(3) Mag. Nutsetters (94812, 94832, 94852)