伸缩刀，无弹簧。Telescopic knife, no spring.

请注意，打印的东西是刀柄，用于适配美工刀，是合法的东西。美工刀是合法的。 Please note that the printed item is the handle of the knife, which is used to fit the art knife and is a legal item. Art knives are legal. 沉头自攻螺丝M1.7X4。。2个螺丝。 视频地址 https://www.bilibili.com/video/BV1WcDnYhE9E/?vd_source=0352f2969dfb04207f8949d045824511