-Screw type studs (spike). Contains 20 pieces.
-Use a screwdriver to screw the shoe sole into the desired position.
-Can be attached not only to felt soles but also to rubber soles.
-Made of stainless steel that does not easily rust. Not only for fresh water but also for salt water.
・ If you have an impact driver, it is easier to do it by first drilling a hole at the position you want to set, and then replacing the head with a + driver.
-Of course, you can set it with just a screwdriver.
・ Please freely attach the studs to your own place or place of your choice.

-Depending on the thickness of the midsole of the shoe, it may penetrate and a protrusion may appear inside the shoe. In that case, not only will the socks be punctured, but you may also be injured, so please be careful.