8Sinn Rod End Cap V2 Key Features – Decorative cutouts – Material: stainless steel – Male threads – 15mm rod compatible   End caps provide extra protection (by preventing the rod-related accessories from accidental sliding off) 6 holes for better grip (put the hex key through one of the holes to unscrew the cap easier) Prevents from having unwanted contents inside the rods.   Dimensions: Length: 21mm Height: 16.7mm Weight: 10g   Set includes: 8Sinn Rod End Cap V2