Disston 5208 Screw Digger for No. 8 Screws

Amazon

Drills, countersinks and counterbores in one operation Each size refers to the only screw no. it can be used with Can be adjusted to pre-drill for different lengths of screws To ensure an accurate use the equivalent plug cutter from the Disston brand, Weight: 0.0330693393 Pounds, Manufacturer: Disston

ManoMano

Disston Screwdiggers fulfil the same function as Screwsinks but the countersinking part can be slid up and down the drill part of the tool.