[Detailed Dimensions]1/4"-20 x 10mm/15mm/20mm/25mm, 5/16"-18 x 13mm/15mm/20mm/25mm, 3/8"-16 x 20mm/25mm, 10 sizes commonly used threaded inserts in a plastic case, different sizes can satisfy your different needs, coarse thread, fit standard 1/4 20 screws bolts, 5/16 18 screws bolts and 3/8 16 perfectly.[Blue Zinc Plated Steel]Made of high quality carbon steel, blue zinc plated on the surface which have good corrosion resistance in bad environment like high temperature, high hardness and perfect wear resistance, standard internal hex socket, without burr, smooth, non-slip, which can ensure long time using.[Easy To Install]You can drill a hole by using a 9.5mm /12mm /15mm drill bit, ensure a precise 90 degree angle for inserting the threaded inserts, then you need to screw the inserts into the 9.5mm /12mm /15mm holes by using our hex wrench.Make sure you countersink the hole to head size before you insert the threaded sleeve, fit standard 1/4 20, 5/16 18, 3/8 16 screws bolts perfectly.[Threaded Inserts Assortment Kit]Total 148 pieces 10 sizes threaded inserts are packed in a durable transparent box with label for you.It is easy to distinguish the size of the product, you can choose the suitable one to use in your wood furniture.Our threaded inserts have standard internal hex socket, without burr, smooth, non-slip.[Wide Applications]You can use our threaded inserts to repair file cabinets and chair leg, you can also use them on head board and foot board of wood furniture.Widely used for soft woods of pine, plywood, fiberboard, etc, work perfectly on the furniture combination, you just need to drill a hole that the size of the body into the wood for the threaded inserts.

[Specifications:] - Package Quantity: 148 Pieces - Color: Blue zinc, as picture show - Thread Type: 1/4"-20, 5/16"-18, 3/8"-16 - Material: High Quality Zinc Plated Carbon Steel - Fit for standard 1/4 20, 5/16 18, 3/8 16 screws bolts - Type: 1/4 20, 5/16-18, 3/8 16 Wood Threaded Inserts Sizes: 1/4"-20 x 10mm/15mm/20mm/25mm, 5/16"-18 x 13mm/15mm/20mm/25mm, 3/8"-16 x 20mm/25mm [Features:] - Material: Made of high quality carbon steel, blue zinc plated on the surface which have good corrosion resistance in bad environment like high temperature, high hardness and perfect wear resistance, standard internal hex socket, without burr, smooth, non-slip, which can ensure long time using. - Easy to install, HELIFOUNER threaded Inserts are best for composite materials, soft wood, plywood and hardwood, you can drill a hole by using a 9.5mm /12mm /15mm drill bit, ensure a precise 90 degree angle for inserting the threaded inserts, then you need to screw the inserts into the 9.5mm /12mm /15mm holes by using our hex wrench. - Total 148 pieces 10 sizes threaded inserts are packed in a durable transparent box with label for you.It is easy to distinguish the size of the product, you can choose the suitable one to use in your wood furniture, widely used for all kinds of composite materials, soft wood, plywood and hardwood. [Package Included:] 1/4"-20 x 10mm--------35 Pieces 1/4"-20 x 15mm--------20 Pieces 1/4"-20 x 20 mm--------15 Pieces 1/4"-20 x 25 mm--------10 Pieces 5/16"-18 x 13 mm-------15 Pieces 5/16"-18 x 15 mm-------15 Pieces 5/16"-18 x 20 mm-------10 Pieces 5/16"-18 x 25 mm--------8 Pieces 3/8"-16 x 20 mm--------10 Pieces 3/8"-16 x 25 mm--------10 Pieces 6mm Hex Wrench--------1 Pieces 8mm Hex Wrench--------1 Pieces 9.5mm Hex Wrench------1 Pieces [Total Quantity: 148 Pieces]