3Pcs Radius 1/4" Shank Round Edge Milling Reamer Bit Set for WoodworkingOOTDTY Features:Sharp Cutting Knife Smooth No Burr, No EdgeHigh Abrasion Resistant, Precision Grinding Technology, Excellent Abrasion Resistant Unique Skull Shape, Chip Removal More SmoothlyStacked Rails and Stile Cutter Will Cut Both Rails and Stile in Cove Design. Using high-frequency welding technology, strong, durable and long service lifeTargets for wood, acrylic material edge treatment, metal materials can not work. It is applicable to electric trimmer, engraving and milling machine, engraving machines, machining centers and other machine tools. Specifications:Material: Alloy blade, carbon steel handleBody structure: solid hardened steelBlade: Fine grain carbideBearing: fully enclosed and lubricatedType: rounded cornersColor: as the picture showsSize 1: About 1/4" x 1/4" (Shank x Radius)D(Diameter): About 15.35mmR(Radius): About 3.17mmB(Width): About 3.17mmH(Thickness): About 7mmL(Total Length): About 52mmSize 2: About 1/4"" x 3/4"(Shank x Radius)D(Diameter): About 32.05mmR(Radius): About 9.52mmB(Width): About 9.52mmH(Thickness): About 15mmL(Total Length): About 60mmSize 3: About 1/4" x 3/8" (Sham x Radius)D(Diameter): About 22.5mmR(Radius): About 4.76mmB(Width): About 4.76mmH(Thickness): About 9mmL(Total Length): About 60mmQuantity: 3 Pcs/1 SetNote:1. Transition: 1cm=10mm=0.39 inch2. Please allow 1-3mm error due to manual measurement. Pls make sure you don't mind before you bid.3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package contents:3 pcs. x cutters