Inked. Bone Rubbed. HD Finished - MLB tested, MLB approved. Identical in quality and craftsmanship to what we send to the big leagues, MLB Prime features the top 3% of all wood we harvest, straighter and harder than any other bat - MLB Prime is big league wood. Graded for quality at 6 different stages from the time the tree is cut until the bat is finished, including the final step - the MLB ink dot slope of grain test. Veneer wood logs ensure maximum straightness and eliminate natural defects developed during tree growth. Vacuum drying guarantees the entire billet is dried evenly and at a pace healthiest for the wood. Bone rubbing compresses every cell to ensure your bat is as hard as it can get. Advanced finishing process (HD Finish) provides the final touch, solidifying the manufacturing processes so your bat is identical to the bats used by big league guys. Birch, the fastest growing species in professional baseball, features the ideal combination of surface hardness and flexibility for increased durability. Hardness similar to maple provides great sound and feel at contact. Flexibility closer to ash allows for forgiveness on non-barrel contact, decreasing the chance of fractured breakage. Lighter per pound than maple, birch also affords lighter swing weights for comparable turning models. The balanced swing weight of the C271 - among the top 3 turning models ordered by the pros - maximizes bat control as well as your ability to get the barrel where it needs to be, when it needs to be there.