Adjustable wrenches

for nuts and bolts, square and hexagon heads, precise metric pre-adjustment scale, chromed, 6" long, max. spanner width 19 mm or 3/4", chromed

Self adjusting. There are four self tightening spanners in the set which cover the following sizes:
1x 9 to 11 mm -- 11/32" to 7/16";
1x 12 to 14 mm -- 15/32" to 9/16":
1x 15 to 17 mm -- 19/32" to 11/16;
1x 18 to 20 mm -- 23/32" to 25/32"