Detect the tool thanks to its fluorescence, activated by a lamp or UV neon light. Detectable in black or dark environment up to 5 meters. Straight ratchet ring wrenches: to reach the nut flat. Compact ratchet mechanism and reversible by flipping the wrench. Increment 5° (7.5° for dimension 1/4" mm 6° for dimensions 5/16" and 11/32"). Dimensions in inches: from 1/4" to 5"16. Presentation: satin chrome finish.