Q: How does this set save time?
This quick-change drill/countersink set lets you flip the drill/driver insert end-for-end by releasing the locking chuck collar, so you switch from drilling a pilot hole to driving the screw without changing tools.
50J0360 - Drill/Countersink Set
A real time-saver when you have a lot of screws to countersink, this convenient tool set lets you switch from drilling to driving operations on the fly – just release the locking chuck collar to flip the drill/driver insert end-for-end.
Well made in the USA, the set includes a quick-release chuck, a drill/driver insert, four drill bits with countersinks (3/32", 7/64", 2 × 1/8") plus five driver bits (#1, #2 and #3 square recess, #1 and #2 Phillips), all held in a molded storage case. The drills and countersinks cut quickly and cleanly with minimal vibration. The bit holder also accepts any 1" × 1/4" hex-shank driver bits.
A convenient way to eliminate need for designated-use drills and time-consuming drill/driver bit changeovers.
This quick-change drill/countersink set lets you flip the drill/driver insert end-for-end by releasing the locking chuck collar, so you switch from drilling a pilot hole to driving the screw without changing tools.
Four drill/countersink bits are included: 3/32", 7/64" and two 1/8" sizes, covering the pilot-hole diameters used for most common screws.
Yes, the bit holder accepts any standard 1" × 1/4" hex-shank driver bit, so the five included bits aren't the only ones that fit.
Five driver bits are included: #1, #2 and #3 square recess plus #1 and #2 Phillips, covering the fastener types most woodworking projects call for.
Yes, a molded storage case holds the chuck, insert and all nine bits together.
| Materials | Steel |
| Dimensions | Drill/countersink bits: 3/32", 7/64", two 1/8" sizes; driver bits fit 1" × 1/4" hex shank |
| Compatibility Dimensions | Accepts any standard 1" × 1/4" hex-shank driver bit |
| Includes | Quick-release chuck; drill/driver insert; 4 drill/countersink bits; 5 driver bits; storage case |
| Package Quantity | 1 kit |
| Country of Origin | USA |
| Warranty | Lee Valley Satisfaction Guarantee |
WARNING: This product can expose you to chemicals including Wood dust, which is known to the State of California to cause Cancer. For more information, go to www.P65Warnings.ca.gov (opens in new tab).

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Quick-Change Drill/Countersink Set
A real time-saver when you have a lot of screws to countersink, this convenient tool set lets you switch from drilling to driving operations on the fly – just release the locking chuck collar to flip the drill/driver insert end-for-end.
Well made in the USA, the set includes a quick-release chuck, a drill/driver insert, four drill bits with countersinks (3/32", 7/64", 2 × 1/8") plus five driver bits (#1, #2 and #3 square recess, #1 and #2 Phillips), all held in a molded storage case. The drills and countersinks cut quickly and cleanly with minimal vibration. The bit holder also accepts any 1" × 1/4" hex-shank driver bits.
A convenient way to eliminate need for designated-use drills and time-consuming drill/driver bit changeovers.
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