Whites Shim - 7.48mm x 2.15mm (5 Pack)Constructed using a specific heat treatment to ensure hardness for maximum durability and less wear and precision machined to match exact sizing requirements. Each size is sold individually as a pack of 5 to reduce costs when only requiring a particular size or restocking your valve shim pack. Most 250cc 4 strokes use 7. 48 mm OD shims, most 400cc and up 4 strokes use 9. 48 mm OD shims, and KTM models use 10 or 8. 90 mm OD shims. Features: Heat