These are lightweight Aerospace Grade 6AL4V Titanium 3/8-24 Lock Nuts, ideal for skateboard trucks or any 3/8-24 locknut application. They're half the weight of steel and resistant to corrosion. Price is for a pack of 2. Lightweight Excellence: Crafted from Premium Grade 5 6AL4V Titanium Aerospace-Grade Titanium Quality Versatile 3/8-24 Lock Nuts: Ideal for Skateboard Trucks and More Corrosion-Resistant and Half the Weight of Steel UPC 815076025631 ASIN B079XZY5X9 Brand ACERRacing Color Silver-Gray Size Name 3/8-24 Truck Kingpin Nuts Metal Type Titanium Part Number AI-SW15-Y6HQ Thread Type Unified National Coarse (Unc) Finish Types Zinc-Plated Grade Rating aerospace Manufacturer ACER Racing Thread Class Coarse Thread Style Unified Fastener Type Lock Item Diameter 0.38 Inches Material Type Titanium Exterior Finish Titanium Number of Pieces 2 Inside Thread Size 3/8 24 Compatible Groove Diameter 0.38 Inches Global Trade Identification Number 00815076025631