Hinge Boring Bits
Hinge boring bits, also called hinge drill bits or hinge bits, bore the round cup hole for a concealed (cup) hinge in a cabinet door. Sizes run from 15 to 40 mm, including the common 35 mm cup size. All are carbide-tipped, have a 10 mm shank and come in left-hand and right-hand rotation.
Lengths and sizes
| Bits | Diameters |
|---|---|
| Left hand 57 mm | 15 to 40 mm, 18 sizes |
| Right hand 57 mm | 15 to 40 mm, 18 sizes |
| Left hand 70 mm | 15 to 40 mm, 19 sizes |
| Right hand 70 mm | 15 to 38 mm, 18 sizes |
Each page lists its hinge drill bits from smallest to largest.
Left hand or right hand
The hand is the direction of rotation a bit is made for. Choose the hand that matches the spindle the bit goes in.