Loaded with the most popular bits used in automotive work, including a 1/4" socket adapter, this driver is a must for the professional mechanic or anyone who works on their car or truck. The valve stem bit is also a standard bit-type in the HVAC industry. The shaft opening serves as a ?" hex driver
Makes it EZ 2 find, change & store bits. Seven double end bits gives you the 14 most popular screwdriver tips.