Uxcell a16042000ux0555 M10 x 20mm Wood Insert Interface Screws Hexagon Socket E-Nuts 5pcs for Furniture Drive Type: hex socket; head style: flat head; material: Carbon steel Package Content: 5 x hex socket insert e-nut; product Name: hex socket insert e-nut; thread size: M10/0.4'' Weight: 54G; main Color: Bronze tone Thread Pitch: 1.5Mm(female thread); total length: 20mm/0.8'' Hex socket size: 11mm/0.43''; head Dia.: 17mm/0.67''