ITEM: 1/8 1/4 Inch Tool Post Grinder Spindle Hole Diameter, Tool Post Grinder Spindle Insert DUMORE. MANUFACTURER: DUMORE. BRAND: Dumore. MANUFACTURER PART: 4230015. 1/8 1/4 Inch Tool Post Grinder Spindle Hole Diameter, Tool Post Grinder Spindle Insert 42,500 Maximum RPM, 4.64 Inch Overall Length (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Grinding, Buffing & Sharpening Machines. Grinding & Buffing Machines. Tool Post Grinders & Accessories. Tool Post Grinder Spindles & Adapters. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: DumoreGrinding, Buffing & Sharpening MachinesGrinding & Buffing MachinesTool Post Grinders & AccessoriesTool Post Grinder Spindles & Adapters.