Just aquired a replacement steering wheel. but unsure what tool I need to undo airbag screws. thanks.

 

if i remember correctly its either a small spline socket or small ordinary socket one each side of rear steering wheel

 

disconnect battery for 30 mins, then you need a 5.5mm socket to undo 2 bolts on rear of steering wheel then airbag pulls off, then you need 15mm for centre bolt losen it then insert key to position 1 and steering wheel will wiggle off dont forget to disconnect airbag wire