Been putting up home made fence panels with 13 mm bolt head screws securing them to the posts, 8 to a panel and 1 in the post to met posts, half way down the garden and my hands are aching from the ratchet spanner and sledge hammer use, can not do much about the hammer but thought an impact driver would be a good idea, looking on B&Q site I was a bit shocked to see a bare bones Makita impact driver no battery, no charger, no case was £57 and batteries £59, but they did have a combo panel of drill, impact driver, 2 batteries, a charger, a case and a few bits for £150, i already have a Makita drill and two batteries so interchangeability was key, the impact driver is compact and seems strong.