Multipurpose zinc-plated through fixing. Expanding sleeve assembled over a threaded stud. True expansion fixing works as nut is tightened. Ready for use with nut and washer for medium weight applications in concrete, brick and blockwork. Suitable for DIY and trade use. Size guide (example): M8 - 8 x 10 x 40mm: (M8 = fixing size; 8 = drill bit size: 10mm = maximum material thickness the fixing will fasten; 40mm = length of fixing).