The Solvent Trap Tube Kit consists of an outer tube and replacement cups of various sizes inside. cups are commonly available in A Cell, B Cell, C Cell, D Cell and so on. The cups can be replaced individually whenever there is damage, which greatly increases the life of the solvent trap.The aluminum solvent trap tube kits are made of 7075 aircraft grade aluminum. It has the characteristics of durability, corrosion resistance, lightness, etc. It is one of the most cost-effective materials.