A ten piece set of torque extension adaptors (crow's foot ring spanners) with a Bi-Hex (12pt) profile from sizes 10mm up to 19mm, each featuring a reversible 120 teeth ratchet mechanism, to enable the use of a 3/8"D torque wrench in tight or restricted access applications. Please note: torque settings must be recalculated to take into account the extra length of these extenders. Supplied in an EVA foam tray, designed to fit roll cab drawers, keeping the adaptors clean, tidy and ready for use.