Material:40cr-v body + 50BV30 ratchet；

Size: 5/16"x11/32", 3/8"x7/16", 1/2"x9/16", 5/8"x11/16",3/4"x13/16";

Extra long beam offers extreme reach and  loads of leverage

Box end heads pivot 180 degrees to easily get around obstructions;

6-point openings snugly fit hex-shaped Fastener heads,gripping the flat sides, Not corners, to prevent round-off;

72tooth ratchet gears need only a 5-degree working Swing ARC

Includes store-and-go Keeper with space-saving folding handl and nonslip grippers to lock in wrenches;

Packing size：45x17.8x5.1cm，1.53kg/set