OJs Double Duro Black/Grey 101A/95A Wheels 54mmOJ's Double Duros are a new approach to wheel design and manufacturing featuring a 101a outer durometer wrapped around a 95a inner durometer. The built in suspension of true, high performance 95a urethane rolls smooth on the roughest spots, while 101a outer urethane rolls fast and slides loud so your tricks turn heads. The blend of OJ's best formulas gives you a roll like no other and makes impossible terrain work. Features: Durometer: 101a (inner)