*1/2" KEY CHUCK KEY AND ADAPTOR WITH A SAFETY SCREW ONLY.

*1/2" UNF Adaptor To Fit 1/2" Drill Chucks For Easy Change From Cutters To Drill Bits.

* Chuck Is A 1.5mm to 13mm Drill Bit Size.

*THIS Was My Own Design From Over 20 Years ago But Now Copied By People That Can't Come Up With There Own Ideas.

* I Also Sell Many Different Drill Chucks To Suit This Adaptor.

* Please Take A Look @ My Other Listings.

* Thanks For Looking.