Durable Material: It comes with the metal material, not easy to deform or break. It can serve you for a long time. Special Design: This kit includes 9 collets that allow you to remove a wide range of tool s from their cartridges safely and easily. Useful Function: This is a very convenient and practical small hand tool that can be applied to your daily life well. Easy to Use: To use, simply load the collet onto the hammer, load the cartridge, and then tap the "hammer" with a series of short, sharp impacts against any solid surface and the will come out of the cartridge, allowing you to adjust powder levels or whatever needs fixing to ensure a safe shot. Meaningful Tool: This puller is the perfect tool for ensuring your rounds are safe to fire in any situation. Color:Blue Material: plastic+metal Size: Approx. 25.00x10.00x3.00cm/9.84x3.94x1.18in. Package Contents: 3 set x Puller