1. A bit for enlarging the upper part of a hole
   - counterbore, countersink

Derived forms: countersink bits

Type of: bit

• family Russulaceae
• family Rutaceae
• family Rynchopidae
• family Saccharomycetaceae
• family Sagittariidae
• family Salamandridae
• family Salicaceae
• family Salmonidae
• family Salpidae
• family Salvadoraceae
• family Salviniaceae
• family Santalaceae
• family Sapindaceae
• family Sapotaceae
• family Sarcoptidae
• family Sarcoscyphaceae
• family Sarraceniaceae
• family Saturniidae
• family Satyridae
• family Saururaceae
• family Saxifragaceae
• family Scarabaeidae
• family Scaridae
• family Scheuchzeriaceae
• family Schistosomatidae