Shimano Tourney RD-TY300D Rear Derailleur is an entry level component from Shimano.
Suitable for all round use, with 6/7 speed compatibility and quite durable this is a bargain piece to get you going.
This Tourney Rear Derailleur uses a Axle Mount position.RD-TY 300D . 6/7 Speed Compatible . Axle Mount