Carbide Counterbore .358" cut Dia - .187" pilot for Caged Bearing FKP-TWB-CB-.197x.357x.066

Carbide Counterbores

Major Diameter (shoulder): .358/.359”

Minor Diameter (pilot): .1865/.187”D x .1250"

Material: Carbide

Type: One piece - non-removable pilot

Fits our Caged Bearings

Knife Bearings - Caged Pair - .197"ID x .357"OD x .066"T for 3/16" Pivots Folders

These are carbide so they should last a very long time if you are drilling wood, g10 or phenolic. They will also relieve metal like stainless or titanium but expect them to wear faster. Like all drills, consider these a consumable. Eventually, they will wear enough they have to be replaced. Since they are carbide, they will snap if subjected to side loads where a regular drill bit could handle it. Secure your work piece and keep your drilling straight up and down. If you snap one of these, you own both pieces.