*(NOT M6 Thread!!)PLEASE Confirm detailed size information on our pictures before purchasing: Screw Thread Diameter is 1/4"-20, Screw Bolt Length is 1", Diameter of Bottom Felt Pad is 1", Drill Hole Insert Nut Diameter is 5/16", T-Nut Base Diameter is 3/4" and T-Nut Total Height is 3/8".
*Install Suggestion: For furniture feet with existing 1/4"-20 thread, simply screw it in the leg leveler to adjust the height; Or you need to drill a 5/16" insert hole with 1-Inch depth (you can use a piece of tape on the drill bit as depth gauge), then tap the T-nut into the hole and screw it into your furniture feet bottom to a desired height.
Package Includes - 24 x Dark-Brown Adjustable Felt Pads with Matched T-nuts, ideal furniture feet pads to provide hardwood floor/tile floor/carpet with effective protection.
High Density Felt Pads - Made of dark-brown thick felt pad and metal screw bolt, this rust-proof and wear-resistant furniture levelers will help to reduce friction & noise while moving furniture, ensure that your hardwood floors stay in pristine condition.
Adjustable Height - The rising height of this furniture leveler pad can be adjusted from 12mm to 25mm / 0.5" to 1", easily adjust with screwdriver on top, 4 leveling feet together have strong support capacity, can support up to 400 pounds.