Hey there gearheads! If you're doing valve work on your engine, these Wiseco shims are exactly what you need. This refill kit comes with 5 identical shims measuring 9.48mm x 2.75mm - perfect for when you need to replace worn ones or fine-tune your valve clearances. What's cool about these is they're through-hardened and precision ground to exact specs, so you get consistent performance every time. No more guessing games with your valve adjustments! Whether you're a professional mechanic or a DIY enthusiast working on your bike or small engine, having the right shim size on hand saves you tons of time and headache. They're built to last through heat and pressure, so you won't be doing this job again anytime soon. Keep your engine running smooth and quiet with these reliable replacement shims. Perfect for maintenance shops or home garages alike - because nobody wants to tear down their engine twice for a simple shim replacement!