The Bore is also internally ground in which the spring loaded point is fitted & travel up & down. Manufactured from quality tool steel- fully hardened and precisely ground taper MT2 shank. The shank has a spring loaded center and self adjusted through the spring load while tapping. The overall length of the tool is 145 mm. Shank is MT2 -Teng Style. This newly designed tap guide will give you the freedom from holding the Tap Body in a drill chuck or collet (*like we do in those straight shank traditional tap guides) because the Shank taper is MT2 which can be directly fitted to a Lathe's tailstock or a milling machine (having MT2 taper) and the tap can be hold through the point. The stroke of the center will follow the tap, assuring straight and accurate hand tapped threads. Qnty @ 1 Pc