DetailsTreated Softwood 35° Cut String for 3 Steps by Richard Burbidge. These cut strings are used to create a three step access to an outdoor decking area. The height of you decking area is determines the style and height of the steps you choose. The treads for the steps are created from deckboards which gives a 30mm overhang on each step. Overall dimensions 1000 x 48 x 260mm.