Long Parallel (LP) - Designed for 2, 3, 4 Irons - 40.5" Raw Length Mid Parallel (MP) - Designed for 5, 6, 7 Irons - 39" Raw Length Short Parallel (SP) - Designed for 8, 9 , and all wedges 37.5" Raw Length Can be trimmed to fit .355 taper tip The next generation of our ground-breaking proprietary key technology, VeloCore+ is a multi-material bias core construction technique that not only increases and enhances the original combination of Pitch 70 and 40 Ton materials, but incoroprates an all-new third premium material to give players even tighter dispersion and increased ball speeds.