the smaller roller: 2.2cmFeaturehand-held, durable ,fitness, slimming, massage, relaxing, comfortableMOQ100pcsPackagecolor box/ bag/vacuum bagabou our samples 1) The delivery time for samples is 3 days. 2) All of our samples for OEM products are free. 3) Samples fees for ODM orders can be refunded to you when you make an order. abou our Warranty time All of our products have 1 years warranty. If any problem in 1years, we could do new for you.