1.Products include： Cavity Interset Anchor Size:M8*22; 16PCS Anchor Pipe Diameter:8 mm; Thread Anchor Length:22mm; Hole Diameter:4mm. Cavity Interset Anchor Size:M8*34; 20PCS Anchor Pipe Diameter:8 mm; Thread Anchor Length:34mm; Hole Diameter:4mm. Cavity Interset Anchor Size:M8*46; 16PCS Anchor Pipe Diameter:8 mm; Thread Anchor Length:46mm; Hole Diameter:4mm. Cavity Interset Anchor Size:M11*36; 4PCS Anchor Pipe Diameter:11 mm; Thread Anchor Length:36mm; Hole Diameter:5mm. Cavity Interset Anchor Size:M11*50; 6PCS Anchor Pipe Diameter:11 mm; Thread Anchor Length:50mm; Hole Diameter:5mm. Cavity Interset Anchor Size:M13*50; 6PCS Anchor Pipe Diameter:13 mm; Thread Anchor Length:50mm; Hole Diameter:6mm. 2.Usage method： a.Drill a hole to the recommended diameter and depth. b.Insert anchor ensuring that points on the shoulder enter the face of the plasterboard. c.Expand anchor using screw or setting tool. d.Remove screw position fixture, re-insert screw and tighten. 3.Scope of use： Ideal for fixing heavy objects securely on soft faced partition boards, plasterboard, hardboard & plywood. The screw and fixture can be removed. 4.Product advantages： High performance cavity fixings. Ease of installation, great strength, sutible for different kind of material. 5.Matters needing attention： Choose the right drill bit before drill the hole. Wear gloves to protect your hands,ensure safety when performing the woodworking jobs.