Drill guide to drill holes at 90deg. Fits my Dewalt DCD995, and probably DCD996. If your drill comes with a clamped handle (43.5mm diameter clamp) 

It needs 3 rods (8mm diameter and approx 20-25cm long) and a 5mm bolt to clamp the ‘drill side' on the drill. 

If you want the handle, you need 8mm threaded rod or you need to cut an 8mm bolt. The base allows to mount the handle on the right or left side. 

In the design, the rods holes are 8.3 mm allowing some tolerance, you'll find a template to try the hole tolerance on your rod without printing the 'drill side' of the guide. You can probably resize slightly the model according to your findings.