Two bamboo rails sit at a 46.5-in inner width on this parallel bar set, and that spacing is what makes the layout useful: it is wide enough to swing between and narrow enough to support on both arms, so the same frame covers a variety of exercise ways rather than one fixed hold. Height is where the adjustment happens, stepping through 11 levels from 38 in to 55 in so the rails follow children of different heights as they grow. Knobs on both the tube and the base clamp each setting, which stops the bars loosening during use rather than letting them creep down over a session. Underneath, the frame is solid A3 steel with a 0.06-in thick tube, and the bottom supports are welded rather than bolted, so the two uprights hold parallel to each other permanently instead of drifting out of square each time the set is moved. That build carries a 220-lb max weight support across a 99-in by 52-in by 55-in footprint. Assembly follows 7 steps with clear instructions. Talcum powder is supplied in the box for better grip and performance during gymnastics, which most sets leave the buyer to source separately. The complete set weighs 106 lbs and ships in 2 boxes, and it is sized for ages 6 to 12. It makes a gift for kids to exercise, keep healthy, and increase courage. Specification: Color: Purple/Blue/Pink; Material: A3 steel bamboo bar; Overall Dimensions: 99" x 52" x 55" (L x W x H) Inner; Adjustable Height: 38" to 55" with 11 levels; Net Weight: 106 lbs Age: 6-12 years old; Max Load Capacity: support: 220 lbs; Box Qty: 2; Package includes: 2 x Bamboo bars 1 x Steel base frame 1 x Talcum powder 1 x Instruction; Width: 46.5"