Multifuction:Anti-slip,prevent from marring and scratches,reduces friction vibration & noise while moving furniture chairs tables and lengthen the life of them & floor Advantages:Lasts far longer than stick-on pads and easier replacement Easy use:Firstly drill pilot hole,then easily mount onto bottom of wooden Furniture Chairs Tables by hammering Quality material:Quality sturdy steel nail,high density fine felt pad and ABS plastic case.They are great protectors to furniture,tables,chairs,stools and your precious floor Warm tips:You'd better pre-drill pilot hole for hardwood to prevent nails from bending,plastic cases from breaking,or furniture feet from cracking damage.Don't directly hammer in.Please put products away from children for sharp nail