Uxcell a15032600ux0110 Adjustable Tap Reamer Screw Extractors Holder Product name: adjustable tap reamer wrench; tap capacity: m1-m12(1/16" - 1/2") Shaft hole diameter: 2.5Mm/ 0.01"; shaft diameter: 7 mm/ 0.28" Fit for extractors: no1-no4; total size: 17.5 x 2.3X 1.2Cm/ 7" x 0.9" x 0.5" (l*w*t)