GRK's TrimT Head screws are an excellent choice for most fine carpentry applications, as well as window extension jambs and more. Our TrimT Head screws have the smallest screw head available; with screw lengths from 1-1/4" (30mm) to 5" (125mm). Most material splitting is prevented because of the TrimT Head screw's exceptionally small head and the W-CutT thread design.