What tool for digging Channel Drainage gully 300mm x 220 mm

[headache5678]

I need to dig out a channel 300mm x 220mm in my garage drive, in order to instal some Channel Drainage. Should I use
an Angle grinder,
- a Kango Hammer,
- a pickaxe or
- a bolster and club hammer
- or a combination of these, please ?

 

[dav]

Go to a tool hire shop and tell them what you want to do - you'll want a minimum 25j breaker/hammer, Bosch GSH11E is a hire favourite. I take it its conrete you'll be removing?

 

[headache5678]

Dav - yes concrete it is and thanks