Strong, plastic assembly square clamps on either the inside or outside of a corner. Ideal for assembling drawers with lipped fronts. Holds deck balusters at a perfect 90° angle while fastening. Size 203mm (8″) x 38mm (1-1/2″). Strong, plastic assembly square clamps on either the inside or outside of a corner. Ideal for assembling drawers with lipped fronts. Holds deck balusters at a perfect 90° angle while fastening. Size 203mm (8″) x 38mm (1-1/2″).