A range of Quality Drill Chucks, Right angled Chucks and Adaptors.

They are available in Keyed and Keyless versions, allowing for quick changes of a drill bit. 

The chuck size refers to the maximum size of the bit that you will be able to insert into the drill.  Drill chucks can be used in SDS drills and other specialist tools to hold conventional bits, increasing their functionality. Keyed chucks are engineered to either loosen or tighten the hold on a tool by using a key.