Listing is for a Kit of 18, three (3) sets of Six (6), New Silver/Chrome Bolt Caps. Kit contains three sets of Six Anodized Bolt Head Covers/Caps -Set A: Six Covers that Fit 7/16" & 10mm & 11mm Bolt Heads -Set B: Six Covers that Fit 1/2" & 12mm & 13mm Bolt Heads -Set C: Six Covers that Fit 9/16" & 14mm & 15mm Bolt Heads These Bolt Caps look great on your engine. You can see the bolts on my engine in the images above. Silicone adhesive works well for securing caps to bolts. WE SHIP WORLDWIDE!!!