Demarini CF Drop 3 BBCOR Gently Used Baseball Bat 34 INCH / 31 OZ. 30-Day 100% Satisfaction Guarantee. 2 Piece Composite Design. Certified for High School & Collegiate Play. 2 5/8 Inch Barrel Diameter. Paraflex Plus Composite Barrel & Handle. Take advantage of high-quality bats at unbeatable prices. Our used baseball and softball bats have been previously swung or unwrapped, but rest assured, they are still in fantastic shape. While these bats may have minor cosmetic blemishes, they are structurally sound and have undergone thorough inspections by our bat experts. Swing with real balls for 30 days to truly get a feel for the bat.