Marucci Cat 7 Silver -8 Baseball Bat 30 incdh 22 oz DEMO 100.00 Marucci Demo bats are a great opportunity to pick up a high performance bat at a reduced price. The bat is etched demo covering the serial number. These bats were used to show to club teams before placing their team bulk orders. Some have been hit with a few times, others not at all. The picture is the actual bat.