Feature: Material: Aluminium, Stainless Steels Size: 2.2″ × 0.9″ × 0.8″(56 × 22 × 21mm) Weight: 55g/pcs Color: Silver Number of Packs: 4 Tensile Strength: 500 Pounds Per Square Inch Max Travel Distance: 6.6mm Compatibility: Hybrid Spoilboard, MDF Spoilboard Please check pictures for more details. .