TR-06Drill and fix — method depends on your wallTimber stud: drill a 2-3mm pilot hole 30mm deep into the centre of the stud, then drive a 4mm x 40mm wood screw straight in. Metal stud (0.5mm steel): never use a wood screw or a plastic plug — they strip straight through. Use a self-drilling metal-stud screw, or a spring toggle if fixing between studs into plasterboard, rated for the rail's loaded weight. Solid brick or block: drill with a 6mm masonry bit to 40-50mm deep, insert a matching wall plug, then drive a 40-50mm screw. Dot-and-dab plasterboard: the board sits on adhesive dabs with a 15-30mm air gap behind it, so use a long fixing (60-75mm) that reaches through to the masonry wall behind, not just the plasterboard skin. Lath and plaster: the laths are thin and brittle, so drill pilot holes gently and use a spring toggle or interlocking toggle that spreads the load — hammering or over-tightening will crack the plaster. A tool rail carries moderate, mostly downward weight, so a metal stud or plasterboard toggle can usually take it — but if you're planning to load it heavily, fit a timber noggin between the studs first for a solid fixing.