Irwin Diameter – 1-3/8″, x 5″, Self Feed bit w/ – 7/16″ Shank
Description:
The Pro-Edge SF138 Self Feed Bit 1-3/8" is designed for heavy-duty wood boring where clean, accurate large-diameter holes are required. Manufactured from heat-treated steel with a precision-angled chisel cutting edge for durability and consistent performance.
Ideal for electricians, plumbers, and contractors drilling through studs, joists, and structural lumber.
Specifications:
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Diameter: 1-3/8"
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Shank: 7/16" Hex
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Type: Self-Feed Bit
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Material: Heat-Treated Steel
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Pilot: Feed Screw (Includes Spare Feed Screw)
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Application: Wood Boring
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Pack Size: 1, 12