2 Rows of Neodymium Magnets Will Hold Any Pry bar DownScrew Magrail & Riser Block to any Location with Ledge Down, Screws Included.Black Aero-Space AluminiumComes with Plastic Riser BlockLimited Lifetime WarrantyWill hold pry bars weighing up to 20 lbsPatented rail system will attach to front of tool truck shelving as well as tool boxes and other areas through out mobile trucks and shops2 Rows of Neodymium MagnetsWill Hold Any Pry bar DownScrew Magrail ; Riser Blockto any Location with Ledge Down,Screws Included.Black Aero-Space AluminiumComes with Plastic Riser BlockLimited Lifetime Warranty