Starrett A19 "Oops" Arbor Used with A1 A2 A10 Arbors
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The A19 'Oops' Arbor is for use in conjunction with either the A1, A2 or A10 type hole saw arbors (e.g. A1-1, XA2, A1E etc).
Replacing the pilot drill, the 'Oops' Arbor allows diameters to be enlarged by attaching a saw of the same size to that of the existing hole. thereby acting as a pilot for the larger diameter saw.
Minimum hole enlargement is 4.7mm (3/16") between the pilot saw diameter and the cutting saw diameter.
The A19 ‘Oops’ Arbor works with the following holesaws because they all have the same screw threads (1/2”-20 & 5/8”-18)
(SH) Constant Pitch
HSS Bi Metal Holesaws ·
(DH) Dual Pitch HSS Bi Metal Holesaws ·
(MPH) TCT Multi Purpose Holesaws ·
CT) Carbide Tipped Holesaws ·
(D) Diamond Grit Holesaws
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