TDS Power Rack / Squat Cage 2" Sq. 11 Gauge Steel Tube Construction HD. J Hooks & 1" Solid Steel Safety Bars included. 48.5" x 48" x 82.5" H - 150 lbs Professionally Knurled 1 1/8" Dia Front Chinning Bar. Designed to add many attachments to convert as a home gym. 31 holes 2" apart with numbers for adjustment. 2" distance between holes and numbers are essential for efficient lifting TDS has been in business for 42 years. Thousands have been sold all over the world.