This is leefai brand pro fingerboard trucks leefai 4.0 inverted Kingpins which compare to leefai G3,these trucks upgraded the baseplate v2 and the match screws are different size from G3,if you used our g3 trucks early,Now you will more like our new trucks 4.0 too,There trucks with higher quality and that stable also easy to help improve your level and experience of fingerboarding. they are Suitable to any lever of fingerboarders. This leefai 4.0 fingerboard trucks have 4 size to option:29mm/32mm/34mm/36mm this listing we only show raw metal,if you need color trucks pls check our another G4 products listing. Each package include 2pcs of trurcks and 10 chrome screws,1 install tool. Safety First: Please note that our Fingerboard wheels contain small parts that may pose a choking hazard. To ensure the safety of children aged 14 and under, it is essential to keep these wheels out of their reach and avoid putting them in the mouth. Your safety is our utmost concern. We love the support and want to see you shred! Make sure to follow us on insta, and tag us in your pictures and videos leefai.fb so we don't miss any! Much love from leefai and op3ra team!