Features:1) 7pcs 1/4" hex shank fastener bits, 6.0, 10.0, 13.0, 16.0, 19.0, 22.0, 25.0mm2) 9pcs 5/16" hex shank fastener bits: 28.0, 30.0, 35.0, 38.0, 40.0, 45.0, 48.0, 50.0, 54.0mm3) 1pc bit holder for 1/4" bits4) 1pc bit holder for 5/16" bits5) Finish: bright finish6) PatentedPacking: aluminum case