4-1/2" - Medium Duty Air Cooled Back-Up Pad Expanding & Lathe Mandrels > Expanding Mandrel Sets Product Specifications Inner Diameter 5/16″

Product Specifications Inner Diameter 5/16″ Tool Type Drill Outer Diameter 9/16″ Type Slip-Fixed Renewable (SF) Length 1″

3740 Reamer Material Solid Carbide Shank Type Straight Flute Type Spiral Overall Length (mm) 71

Item #: FF816884881

Item #: 16603128

4-1/2" - Medium Duty Air Cooled Back-Up Pad Expanding & Lathe Mandrels > Expanding Mandrel Sets Product Specifications Inner Diameter 5/16″Item #: MH62A02122 Manufacturer: Norton Abrasives Mfg #: 6364250212 Technical Specifications: *Brand Name: Norton Abrasives *Diameter: 4 1 2 *Hardness: Medium *RPM: 11,000 *Size: 4 1 2 *Standard Package: 5 *Style: Standard *Type: Backup Pad Description: *Air Cooled Standard Back Up Pads *Slotted hub design and curved ribs draw heat away from the grinding zone, reducing disc loading and increasing life *All pads have a 5 8 11 threaded female hub for