1/4 Turn Quick Release Steel Dzus Button -Tab/Spring Kits These DZUS kits are used to attach aluminum or steel doors/roofs/beds and many other applications. We have specifically put together this kit for your convenience. -Rolled edge tabs allow for a precise placement. -Tapered flush head steel buttons allow for clean installs with easy graphic lay overs. Product Features: Tabs-Ultra light Contoured and dimpled center 1-3/8" Steel Tabs ready to weld. Springs- Zinc plated steel springs with 1-3/8" centers with a .375" Grip. Spring color may vary due to availability. 7/16" Steel Standard Head Flush Top 1/4 turn fastener buttons with .500" grip.