BGS 9771 Tap Adaptor Socket Set 6,3 mm (1/4") / 10 (3/8") Drive 8 pcs.

made of chrome vanadium steel internal square 1/4"(6.3 mm) and 3/8" (10 mm) drive works with a ratchet or sliding handle suitable for taps: 1.5 mm - 12 mm, 1/16"- 1/2" NF/NC with magnet for holding the tap ideal in tight places where a tap holder cannot be used on metal rail, Weight: 0.7054792384 pounds, Manufacturer: BGS