4"e Insty-Driver Sleeve
|The 4” Intsy-Driver Sleeve (also known as a drive extension) fits the Rockler countersink and self-centering bits. The magnetic tip holds all ¼” style insert bits and screws. Bits are held in place with a “pressure bearing”. Ideal for use with set #8 (59971, sold separately).
Only $9.99 at Rockler.com