Company Pro jernač have constructed and manufactured a forest trailer with a capable hydraulic drive in 2016. It's load capacity is 18 tonnes and introduces several solutions for difficult terrain. The trailer can reach the speed of 14.4 km/h with the use of hydraulic drive and it can hydrostatically brake from the same speed down to zero. It's drive or braking force is 5.5 tonnes per axle and it is intended for transport of shorter timber. The trailer can be manufactured with or without Palfinger Epsilon timber crane.