xTechnical Specs Item Hex Drive Threaded Wood Insert Type Flanged Material Die Cast Zinc Alloy Internal Thread Size M4-0.7 M5-0.8 M6-1.0 M8-1.25 M10-1.5 Thread Type Metric Length 8mm - 25mm Option Application For Use In Soft Wood Installation Use Hex Key or Power Drive Tool Package Quantity: 20 / 50/100/200pcs