Can the resistance bands be used to assist with pull ups on bar? yes the resistance bands can be used to assist with pull ups on bar. This set of resistance bands including 5 bands with different levels to suit different training activities. Give you more choices to choose and never worry about which one to buy because you would get all of them together! Tender pink: 600*50*0.35mm(L/M/H) Resistance :5-10 lbs Pink: 600*50*0.5mm (L/M/H) Resistance :10-20 lbs Rose red: 600*50*0.7mm (L/M/H) Resistance :15-20 lbs Deep rose: 600*50*0.9mm (L/M/H) Resistance :20-30 lbs Purple: 600*50*1.1mm (L/M/H) Resistance :30-40 lbs Package Including: 1 x X-light Resistance Band 1 x Light Resistance Band 1 x Medium Resistance Band 1 x Heavy Resistance Band 1 x X-Heavy Resistance Band 1 x Carrying Pouch Weight:135g