Joker 6004 4-piece wrench set, automatic and continuous grip prevents slippage and damage, mechanical ratchet function: continuous work without interruption to reposition the tool, 30° return angle, for metric hex bolt or nut heads: 7.0,8.0,9.0,10.0,11.0,12.0,13.0,14.0,15.0,16.0,17.0,18.0,19.0, inch: ¼ 5/16 3/8 7/16 ½ 17/32 9/16 19/32 5/8 11/16 ¾