3/8sq.(9.5mm)16pcs. 
* The non-slip ratchet handle has the constricted end, which facilitates tightening work in a deep area. 
* Low height ratchet swiveling head can be used for quick turning like a screwdriver, by setting the handle vertically to the head. 
* Surface contact avoiding the damage on the edges of bolts or nuts. 
* The inside of the case is a 2-layer structure to prevent forgetting to put the tool back.