Hey roofing pros and serious DIYers! If you've got a TranzSporter TP250 or TP400 ladder hoist that's seen better days, this OLIMPOCICLI carriage wheel replacement kit is exactly what you need to get it running smoothly again. This 2-pack includes everything required: carriage wheels, bolts, lock washers, and large washers - basically all the components that typically wear out over time. These aren't cheap imitations either - they're made from premium carbon structural steel that handles increased torque and pressure way better than the original parts. The replacement OE number is 90040, so you know they're the right fit. Swapping out worn wheels makes a huge difference in how your ladder lift operates - smoother movement, less sticking, and more reliable performance overall. Regular maintenance like replacing these components prevents bigger problems down the road and keeps your roofing projects moving efficiently. The installation is straightforward if you're handy with tools. Seriously, don't let worn-out parts slow you down or create safety issues - this affordable kit will have your TranzSporter working like new again. Perfect for roofing contractors, construction crews, or anyone who relies on their ladder hoist for moving materials up to the roof safely and efficiently.