Thimble Drill Bit With Seat For Small Lathe DIY Woodworking AccessoriesOOTDTYOProscribe:Features: Made of precision bearings With center positioning hole, so that the parts can be processed to achieve high dimensional accuracy. Easy to install and replace. and long service life. Specification: Material: Metal Optional Size: S, LWimimens: As pictures shown. (approx.)Small Size: Center Height is 23mm/0.91", Pitch is 32mm/1.26" Large Size: Center Height is 27mm/0.911.06'', Pitch is 37mm/1.46'' Color: SilverQuantity: 1 SetNote: Transition: 1cm=10mm=0.39 inchNo retail package. Please allow 1-3mm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1 x Thimble with Seat1 x Wrench