The item is a "Step" Type Drill Bit 3-3/4 in length with an 1/8 in Dia starter tip and then steps up to a 7/32 in Dia. This is used for drilling the correct sized holes in a window screen frame that uses a Plunger Latch for securing the screen into the window frame.
Manufacturer: PRIME-LINE PRODUCTS
Manufacturer's Part Number: P 7922
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|Diameter||1/8 to 7/32 in|
|Flute Length||1/2 in|
|Overall Length||3-3/4 in|
|Suitable for||Plunger Latches PL 7924, PL 7925, PL 7777|