Louisville Slugger solo 619 for when you need to come up with a big hit, this is the bat for you. The solo 619 USA baseball bat is one of the lightest-swinging bats in the 2019 Louisville Slugger lineup, making it the ideal choice for players looking to square up some high heat. A one-piece SL Hyper alloy construction lends a stiffer feel and maximum energy transfer on contact. A speed ballistic composite (SBC) end cap helps further increase swing speed and bat control and the all-new Louisville Slugger pro comfort grip gives you the perfect mix of tack and cushion.