• Straight shank drill bit
• Carbide Tipped
• Custom made for drilling finger insert holes in bowling balls
• Free Shipping for Continental USA
• Taxes included in price

*Manufacture marking makes it look like 11/2 but it is 1 1/2 

Forstner Drill Bit Instructions:

No pilot hole is needed for these bits as these bits have a blade on the bottom to cut.

1.  Line up bit with marks on ball.

2.  Drill your hole!  Yes it is that easy!!!!!!

The 1 1/2 inch bit comes with an adjustable stopper for use with JoPo or Vise interchangeable thumb systems.

To setup stopper to proper depth:

1.  Drill hole with existing JoPo or Vise bit. 

2.  Put in Forstner 1 1/2 bit and set stopper to depth needed.

*If you are using the 1 1/2 for any interchangeable thumbs like JOPO or Turbo you will need to switch bits and drill deeper to account for the JOPO insert tool space or the Turbo locking system space needs.