Short explanation about the different available reciprocating saw blades from Multisaw.co.uk:

Black/Yellow Saw blades suitable for cutting wood
Blue/Yellow Saw blades that are suitable for cutting different types of wood and (soft) metals
Black/Red Saw blades suitable for cutting brick, aerated concrete and fiber cement
Orange/Black Saw blades suitable for pruning (coarse tooth) and cutting the hardest materials
Black/Gold Saw blades that are suitable for cutting metals and other hard materials, because of the titanium coating these saw blades have a longer life than the "normal" bimetal saw blades.

If you are not sure how to choose the right saw blade, do not hesitate to contact us.