Today's technologies and materials have combined to produce builders wedges of such consistent shape, strength and durability as to make them suitable for a whole range of uses for professional contractors and joiners.Folded wedges allow adjustment for levelling and aligning various building components. As they are exactly complementary pairs, they present parallel faces for even loading so providing a support block of consistent dimensions.Interlocking ribbed surfaces make incremental adjustment easy providing grip to prevent subsequent slipping.Unlike wooden wedges, they need no preparation, they don't rot, shrink, crack or split and can be nailed through for final fixing providing a stable and permanent installation.