Diameters over 2 1/2 inches have a meet a minimum of 140

8 x 3/4 Simpson Mod Truss-Head Self-Drilling Wire Lath Screws - Phillips Drive 410 SS - Carton (1000)

1 1/2-6 Nylon Insert Locknut Zinc Plated

9/16-12 x 6 Hex Cap Screw SS 18-8 (A2)

61/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank) Star Flat Decking Screws Yellow Zinc Plated Diameters over 2 1/2 inches61 64 x 6 Reduced Shank Drill Bit Cobalt (1 2 Shank) . Expands the size range capacity of a 1 2 inch portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. Precision ground for high degree of concentricity between shank and body diameter. Ideal for drilling in low and medium tensile strength materials.