Use for starting a 1-1/4 in. hole drill to a depth of approximately 1/4 in., stop hammer, remove guide plate and center pin. Place core bit back into the grooved area and resume drilling to required depth of hole. Adds bit stability and reduces bit walk.
- Guide plate has a 1-3/4 in. Dia
- Durable plastic material allows for reuse
- Used with core bit 48-20-5130, 1-3/4 in. x 4-1/16 in.
- Plate is designed for bit stability and reduces bit walk