... 1,name: mechanical ratchet wrench 1/2'',3/8'',1/4''dr hand tools 2, size: 1/2'',3/8'',1/4''24 teeth and 1/2'',3/8'',1 ... MetricQ'ty 20' GPLWHHY1014Ratchet wrench1/2''40pcs1set/blister card OR in color box253525220.019327200pcs1/3''60pcs233525220.019340800pcs1 ... machining→punching,knurling→coreless grinding→heat treatment→vibration grinding,polishing,electroplating→dimension inspection →hardness test ...