uxcell Adjustable Leveling Feet Foot Cap Kit M8x16mm Thread 20mm 10 Sets Product Name : Leveling Foot + Square Tube Insert Set;Leveling Foot Thread Size : 8 x 16mm/ 0.3" x 0.6" (D*L);Base Diameter : 38mm/ 1.5" The inner diameter range of fitting for square circular tube is 17mm-19mm Leveling Foot Height : 33mm/ 1.3";Female Thread Dia : 10mm/ 0.4"; Square Tube Insert Size : 20 x 20 x 14mm/ 0.8" x 0.8" x 0.6"(L*W*H);Material : Metal, Plastic Color : Color;Siver Tone, Black : Siver Tone, Black Weight : 231g;Package Content : 10 x Leveling Foot10x Square Tube Insert