Fangrui Product Details D Key Are Made Of High Quality Chrome-plated Steel Construction. Industry Standard For All D S With 1/4 Inch Socket Square Tension Rods Includes 3 Standard D Keys, And 1 Continuous Motion Speed D Key For All D S With Standard 1/4 Inch Socket Square Tension Rods. The Spinning Camber Design Of The Continuous Motion Key Makes It For Quickly And Easily Removing And Replacing D Heads. D Keys Made Of High Quality Chrome-plated Steel, And Are Fit For All D S With Standard 1/4 Inch Socket Square Tension Rods Whether Electronic D Kit Or Traditional D Kit. This Economical Bundle Includes 2 Standard D Keys And 1 Continuous Motion Speed D Key. Save You Money, 4 D Keys For The Price Of One. The Spinning Camber Design Of The Continuous Motion Key Makes It For Quickly And Easily Removing And Replacing D Heads. Color: Silver Quantity: 4 Pcs Material: Chrome-plated Steel Packing Size: 12*8cm Package Included: 3 X Standard D Key 1 X Continuous Motion Speed D Key Only The Above Package C