This is a ski boot shell opener. This tool is used to modify ski boots by grinding down areas that cause pain when the boots are worn. It is equivalent to those used in overseas ski shops. The included binding also allows for GripWalk compatibility. The sole size of the boot can be adjusted on the binding side, but you can also adjust it by loosening the four hex bolts that secure the white base, allowing it to move back and forth. The Atomic boots in the image are not included! When using, pull the left and right straps so that the tension is evenly distributed. When hooking the stainless steel hook, protect the boot buckles with masking tape or similar to prevent scratches. Do not grind thin-shelled boots; instead, use shell expansion. (Be careful not to over-grind.) Due to the specialized nature of this tool, use by those with expert knowledge is recommended. When shipping, the frame will be disassembled. Please assemble it yourself. (Simply tighten the bolts with the included hex wrench.) <Delivery Time> This product is made to order, so please allow 1 to 10 days for shipping. <Apology> Due to rising material and labor costs, we have been forced to raise the price by 1%. We sincerely apologize for any inconvenience.