Yes, fractional mining contracts are one of our special features. 

Miners are getting more and more expensive and the price is a barrier to entry. We offer fractional mining contracts so you can get, for example, one-tenth of the hash rate of a full machine. This makes bitcoin mining affordable for more people. 

We split mining contracts into separate fractions. If for some reason you decide you don't want to continue the contract, you can sell it at the Marketplace. Please note that you can't "combine" fractional contracts into one whole. We identify each contract with the serial number of the physical device.