This is a functional and clever tool that is built to last a lifetime. Using standard hex bits, the Driver has a machined aluminum body with holes to hold extras, which are held in with a friction material. The drilled handle also allows use of the included extension as a “cheater” to increase leverage. Includes five bits: Phillips (#2 (two) and #3) and slotted (3/16" and 1/4"). 3.9"×.9", 5 oz.