The Handle Helps For Easy Gripping, And The Double Ended Chuck Is Great For Drilling, Tapping, And More. Comes With 2 Double-ended Collets (one Is Screw Chuck And One In The Handle). Works With Bit Sizes 1/8" And 5/16". Swivel Head Is 3/4"; 3 3/4" Long.

* Pin vise is 3.5-inches long - made of stainless steel - solid construction

* 2 Double ended collets - works with bit sizes 1/8 and 5/16 inches - second stored in body

* Swivel head has a diameter length of approx. .75-inces - provides leverage for drilling

* Vise to hold small drill bits - for drilling insertion hole - jewelry work - very diverse tool

* A very high quality piece of equipment that is necessary for many tasks