Large and small horseshoe shaped packers for residential and commercial construction projects. Aerobolt's Horseshoe Packers are the perfect product for levelling and adjusting. Designed to bridge irregular gaps in the construction industry. Packers have 101 uses and would suit window installers through to pre-cast and tilt-up concrete installers. Can be nailed, drilled and cut. Solid polypropylene. High compression strength. Colour coded thickness. Numerous shapes and sizes.