Platypod Spike and Screw Set Platypod 3x Spike Screws - 3x Round Nuts - 3x Rubber Caps/Feet - Platypod Pro 1 Year Limited Warranty Material: Stainless Steel Spike Screws Size: 0.25 x 1.5" / 0.64 x 3.81cm Round Nut diameter: 0.5" / 1.27cm Rubber Caps/Feet: 0.25" / 0.64cm