bicycle wheelset flat proof , soft solid tires. no air needed

hybrid wheelset axle spacing is 100 front and 135 rear . rear wheel can take anywhere between 8 speed thru 12 speed cassette . or you can use a spacer ,sold elsewhere ,to allow you to use a 7 speed cassette.. everything is brand new , the tire size is 700 x 38 . pretty average for hybrid bikes. the tires are made of some kind of hard foamy solid rubber and have just a little squish to them for a normal feeling ride.   NO PUMP ever needed .  no flat tires EVER . I will include the quick release skewers not shown in the pictures