DIY bolt floating staircase riser bracket can easily help you create your own floating staircase. Our bracket is made of high-strength 3/16 inch thick heavy-duty steel cut and manufactured. Each stair step requires a left and right bracket. The selling price is for a pair. 【Purchase Notice 1】 : This product does not come with an installation manual or installation screws.in addition,Each stair step requires brackets on the left and right, so our brackets are also sold in pairs. Each pair of brackets (left+right). 【Purchase Notice 2】: Before installing the bracket, it is necessary to calculate the number of steps for your staircase steps and set up the longitudinal beam in advance. Then purchase on demand. 【Installation Recommendations】:We recommend Lag Bolts to attach the bracket to the stringer as well as the tread to the bracket. When attaching the lag bolts always pre-drill and use bees wax to lubricate the bolt prior to screwing them into the wood to keep from splintering. 【Selection of Installation Screws】:5/8" can be used for the bracket to stringer and 3/8" can be used for the bracket to tread. The length of the bolt we vary depending on the width of the stringer beam and the thickness of the stair treads. (Example: for a 2.5" thick tread we would use a 2" long lag bolt. For a 4" wide stringer we would use a 2" long lag bolt for the left side and the right side.) 【Multi Scenario Application】: This stair step bracket is very suitable for basements, garages, decks, warehouses, cabins, and construction sites. Its flexible design can meet the needs of DIY stair builders with different requirements.