This is the guard from our SB-16 Engineer Series Pillar Drill. It could be used to replace or upgrade the chuck guard on many other pillar drills or small vertical mills. It is simply fitted using the included mounting bracket, with just two holes to drill and tap. It is also fitted with a rotary switch to give electrical interlocking, provided your machine is fitted with a suitable NVR switch. The 200 x 150mm transparent shield gives you a clear view of your work. A very worthwhile upgrade.