Trial and error but you just have to get them level by twisting or unwitting until level. Use them for shelves in the bathroom. Came out exactly like I wanted, very strong and sturdy
YUMORE Folding Shelf Brackets 20", Max Load: 330Lb Heavy Duty Stainless Steel Collapsible Shelf Bracket For Table Work Bench, Space Saving DIY Bracket, Pack Of 2
17 Review
Heavy Duty 12 Inch Black Metal Collapsible Folding Shelf Bracket For Wall Mounted Table, Bench And DIY Projects - Max Load 150 Lb
37 Review
L Bracket Corner Brace, YUMORE 4'' X 1'' Stainless Steel Right Angle Bracket, 90 Degree Bracket Fastener For Wood Shelf, Furniture, Cabinet, 4 Pack
16 Review
Pynsseu 24-Inch Heavy Duty Folding Shelf Brackets For Space-Saving Storage β 2 Pack
21 Review
32Oz Gorilla White Waterproof Patch & Seal Liquid For Effective Sealing (Single Pack)
30 Review
Gorilla Waterproof Patch & Seal Liquid - Black 16Oz - Ultimate Solution For Quick Fixes (Pack Of 1)
39 Review
Silver Holographic Stars Glitter Grout Tile Additive 100G - Easy To Use For Tiles, Bathroom, Wet Room & Kitchen
14 Review
Eco-Friendly Solarez UV Cure Grain Filler & Sealer - Perfect For Fine Furniture, Guitars, Pool Cues And DIY Woodworking!
10 Review