Sonalika International Tractors Ltd (ITL) is planning to file draft documents for an initial share sale with the regulator, claim industry sources. Private equity firm Blackstone is expected to partially sell its investment in ITL. A sum of Rs. 2000 crore is expected to be had from this. The IPO, sources claim, is a pure offer for sale and no primary capital is expected to be raised by the company. Blackstone Group Lp is known to have invested USD 100 million for a 12.5 per cent stake in the company in 2012. The ITL IPO comes in the wake of Blackstone seeking to sell several of its Indian investments.