Makes everything easy to see and find and will delete the amount of tools you require immensely have only 2 ratchet spanners instead of 48 ratchet spanner 1 metric size 8 10 11 13 mm flat and up to 15 adjustment imperial 516 38 716 flat and up to 15 adjustment ratchet spanner 2 metric size 14 16 17 19 mm flat and up to 15 adjustment imperial 916 58 1116 flat and up to 15 adjustment