2:1 Gear Ratio rewinds line 2X faster than traditional chalk reels, 150' heavy-duty braided line resists fraying and breaking over long distances. Soft-touch ergonomic grip provides comfort and control while snapping lines. Durable ABS housing withstands jobsite wear and tear, Large sliding door for easy chalk fill. Steel docking ring for secure anchoring. Robust steel handle and large center hub deliver increased durability, strength and torque