Freud PB-107B 7Pc Prec. SHR Serr EDG Fstnr Bit Set 1/4in to 1in Description 7 Pcs. Precision Shear Precision Shear Serrated Edge Forstner Drill Bit Set 1/4 Inch to 1-Inch From the Manufacturer Precision Shear Forstner Bits feature a double-ground, razor-sharp serrated edge that slices throughout the rotation of the bit for less splintering and chipping, producingflawless flat-bottom holes. This unique geomtric design has multiple cutting edges that produce greater shearing action, allowing for faster rotational speeds and more efficient cutting. Competitive forstner bit designs produce small chips and dust that collect in the cutting area, increasing friction and heat, thus causing the bit to dull quickly. Those designs also create holes with rough edges that require sanding. In addition to serrated edges, Precision Shear Forstner Bits include a hardened steel body for longer life and sharper edge, an ultra sharp spur to ensure accurate holes and less "walking", and steep angled cutting edges to produce holes that are smooth and flat. This set contains 1: 1/4", 1/2", 3/4", 1", 3/8", 5/8" and 7/8" bits. Features: Specs: Diameter 1/4" to 1", Length 3-1/2", Rotation RH, Shank 1/4" to 3/8" Razor-sharp serrated edges give smooth and flat-bottom holes. Quality Forged Construction for extended life Ultra Sharp Spur to ensure an accurate starting hole Steep Angled Cutting Edges produce holes that are smooth and flat, and create chisel-like" curls for fast, clean chip removal. Freud's Limited Lifetime Guarantee Product Details: Material: Blend Shank Type: Straight Brand: Freud Item Dimensions LxWxH: 6.25 x 0.82 x 0.51 inches Tool Flute Type: Straight Material: ‎Blend Shank Type: ‎Straight Brand: ‎Freud Item Dimensions LxWxH: ‎6.25 x 0.82 x 0.51 inches Tool Flute Type: ‎Straight Surface Recommendation: ‎Alloy Steel Manufacturer: ‎Freud Part Number: ‎PB-107B Item Weight: ‎2.4 ounces Product Dimensions: ‎6.25 x 0.82 x 0.51 inches Item model number: ‎PB-107B Is Discontinued By Manufacturer: ‎No Size: ‎One Size Color: ‎Multi Style: ‎B Precision Shear 7 Piece 1/4 Inch to 1-Inch Serrated Edge Forstner Drill Bit Assortment Voltage: ‎1 Volts Wattage: ‎1 watts Item Package Quantity: ‎1 Measurement System: ‎Inch Usage: ‎Professional Included Components: ‎Drilling Boring accessory for Forstner Bit Sets Batteries Included?: ‎No Batteries Required?: ‎No Warranty Description: ‎Freud Limited Tooling Warranty. Contact Freud customer service for more details. Date First Available: July 23, 2003