drill bit tip holders
durston mfg xzn410 03 10mm 12pt triple sq 4l bit and holder 3 8 sq drive
li 12 pt . triple square 4l bit and holder black bit with 3 8 square drive satin chrome knurled li 4in . long driver in chrome plated holder . li s2 alloy steel bits heat treated to rc 60 63 . li part of vim xzn400 triple square spline drive bit 9 piece set german vehicles .