This Aluminum Competition Speedloader is precision CNC machined from solid aluminum. The speedloader bodies are cut in a polygon shape that produces the smallest possible outside dimensions and allows them to easily fit compact revolvers. They are also equipped with a rattle-eliminating O-ring that contacts the cartridge bases and firmly holds the rounds in place. Cartridges are released with a simple twist of the large knurled knob. This Competition Speedloader is red anodized with the Ruger logo on the knurled black knob. Fits GP100® models chambered in .38 and .357 Magnum. Made in the USA by Pachmayr®.