The compact boom screed has been PERFECTED. Introducing the SRS-4 Laser Screed® Machine. Safer / Better Visibility – no lower frame and no-nonsense design gives 360° visibility. More Maneuverable – steering with 2-wheel, 4-wheel, and crab steering. Easier to Operate – head lowering with hydraulic cylinder, not wrenches. Smoother Process – roller boom – wear pad boom. Lighter Weight only 4,400 lbs / 1,996 kg