For most jobs 125mm is the best choice. It cuts steel and tile with ease and takes the widest range of discs. Pick 115mm if you want a lighter tool. Choose 230mm only for deep cuts in slabs and kerbs.
Delivery times and charges vary by retailer. Most angle grinders arrive within 1–3 working days to UK mainland postcodes and many retailers offer next day delivery. The Highlands and Islands can take longer. Check the retailer page for details.
Only if you work on UK building sites. Most sites need 110V tools run through a transformer. For home and workshop use a 230V grinder plugs into a normal socket.
A brushless motor uses electronics in place of carbon brushes. It runs cooler and needs less upkeep. On a cordless grinder it also gets more work from each battery charge.
Cordless goes anywhere and makes sense if you already own batteries from the same brand. Corded costs less and never runs flat. It suits long jobs and big 230mm tools.
Look for a paddle switch that stops the tool when you let go. Kickback control cuts power if the disc jams. An electronic brake stops the disc in seconds. Always keep the guard fitted.