The ropes in the set are reflective ropes that will reflect light when illuminated at night. There are a total of 4 ropes, each 4m. The hammer is a plastic hammer suitable for small ground pegs, but not for large ground pegs Name: Universal Aluminum Ground Stakes for Tents Specifications: 18CM*6mm Packaging: Loose-packed Material: High-quality aluminum alloy Weight: 15 grams Color: silver Function: Used as a complement to tents and ground mats. Most tent pegs are made of thin iron and can easily be damaged on hard ground, so it's a good idea to have a few aluminum pegs as spares.