Tapered drill bits and countersinks are made of high-quality
high speed steel
(HSS). Both tapered bits and countersinks are
removable and adjustable. Hex collars and hex shanks fit our Rockler
exclusive Insty-Driver.
Nine-piece countersink set shown includes 3
countersinks with tapered drill bits perfectly matched for #6, #8 and #10
screws, a 3/8" stop collar for countersink depth, #1 and #2 Phillips bits, #1
and #2 Square Drive bits and a sturdy nylon case plus an allen wrench for
all adjustments.