Triumph 057520 – Twist Drill, 6″ Aircraft Extension, Heavy Duty, 135deg Split Point, HSS, Black Oxide, Size 5/16 (0.3125), Flute length – 3-3/16, Overall Length – 6, Pkg Qty – 6
WARNING: Cancer and Reproductive Harm—www.P65Warnings.ca.gov
6″ Aircraft Extension Drill, Size 5/16, Heavy Duty, Black Oxide, 6pk, Triumph 057520
Original price was: $17.78.$9.60Current price is: $9.60.
Sale!Related products
Sale!
7 Pc. TCT Dovetail Bit Set
Original price was: $87.99.$56.19Current price is: $56.19.
Sale!
CG-9 Filter Regulator/Lubricator Combination Unit with Ball Valve
Original price was: $116.56.$78.63Current price is: $78.63.
Sale!
Rusty Seconds Diamond Lapping Plates
Original price was: $67.19.$42.85Current price is: $42.85.
Sale!
Wheel Marking + Mortise Gauge
Original price was: $23.99.$13.24Current price is: $13.24.
Sale!
![[3401-010] Hex Nut for WEN 3401](https://www.bestprohardwaresupply.com/wp-content/uploads/2026/10/3401-010-hex-nut-wen-3401.webp)
![[DF360iX-127] Carburetor for WEN DF360iX](https://www.bestprohardwaresupply.com/wp-content/uploads/2026/10/df360ix-127-carburetor-wen-df360ix.webp)
![[6369-041ASM] Carbon Brush Assembly (Set Of 2 - Includes Holder, Spring, And Brush) for WEN 6369, 6377, DW5062, and DW5084](https://www.bestprohardwaresupply.com/wp-content/uploads/2026/10/6369-041asm-carbon-brush-assembly-set-2-includes-holder-spring-brush-wen-6369-63.webp)
