ABRASIVES 12-12 ABRASIVE GRINDING WHEELS Heavy-Duty Grinding Wheels • Rapid cutting • High-grade aluminum oxide abrasive • Unaffected by oil and water Dia. (Inches) Thickness (Inches) Arbor (Inches) Grade Reducer Bushing for Arbor Sizes (Inches) Maximum RPM Item No. Pkg. Qty. 6 3/4 1 Coarse 1/2, 5/8, 3/4 4,140 NS147516 1 3/4 1 Medium 1/2, 5/8, 3/4 4,140 NS147514 1 3/4 1 Fine 1/2, 5/8, 3/4 4,140 NS147515 1 1 1 Coarse 1/2, 5/8, 3/4 4,140 NS147521 1 1 1 Medium 1/2, 5/8, 3/4 4,140 NS147523 1 1 1 Fine 1/2, 5/8, 3/4 4,140 NS147522 1 7 1 1 Coarse 1/2, 5/8, 3/4 3,600 NS147519 1 1 1 Medium 1/2, 5/8, 3/4 3,600 NS147520 1 8 1 1 Coarse 5/8, 3/4 3,600 NS147517 1 1 1 Medium 5/8, 3/4 3,600 NS147518 1 10 1 1-1/4 Coarse 3/4, 7/8, 1 2,292 NS148616 1 1 1-1/4 Medium 3/4, 7/8, 1 2,292 NS148617 1 1 1-1/4 Fine 3/4, 7/8, 1 2,292 NS148618 1 12 2 1-1/4 Coarse 1 1,910 NS148619 1 2 1-1/4 Medium 1 1,910 NS148620 1 2 1-1/4 Fine 1 1,910 NS148621 1 Heavy-Duty Grinding Wheel for Sharpening Drill Bits • Formulated to sharpen all types of drill bits except carbide • Delivers finer, sharper, more free cutting action with less burning than general-purpose grinding wheels Dia. (Inches) Thickness (Inches) Arbor (Inches) Grade Reducer Bushing for Arbor Sizes (Inches) Maximum RPM Item No. Pkg. Qty. 6 1 1 Fine 1/2, 5/8, 3/4 4,140 87617 1 Silicon Carbide Grinding Wheels • Sharper, more aggressive, cuts cooler, lasts longer • Precision balanced • Green for visual identification • Ideally suited for grinding carbide • Specially formulated for general-purpose grinding Dia. (Inches) Thickness (Inches) Arbor (Inches) Grade Reducer Bushing for Arbor Sizes (Inches) Maximum RPM Item No. Pkg. Qty. 6 3/4 1 Medium 1/2, 5/8, 3/4 4,140 NS142505 1 6 1 1 Medium 1/2, 5/8, 3/4 4,140 NS142506 1 7 1 1 Medium 1/2, 5/8, 3/4 3,600 60939 1 8 1 1 Medium 5/8, 3/4 3,600 NS142507 1 10 1 1-1/4 Medium 1 2,292 NS142508 1