It's important that your training tools mimic that which you'll use in a real world self-protection scenario. If you're using inferior training knives then when you handle a live blade when your life or your loved one's lives are at stake you won't have the same situational awareness of the blade itself.
This is why we offer exquisite, realistic training knives for use in self-preservation and self-perfection training. While these are made especially with training in mind they are made to weigh the same as a live blade. Obviously the more realistic your training the more consistent your actions will be when the absolutely have to be.
This aluminum training knife has a Kamagong ("Ironwood") handle. As you see in the picture, the ink pen is presented to assist in scaling the length of the blade, so this particular blade mimics something akin to a fixed-blade knife.