The safety needle of the sewing machine protects the hands to prevent safety problems and normal use. This is universal fitting, remove the foot screw and fit . It is suitable for most single-needle industrial sewing machines, and helps prevent finger stitching accidents. It can also be used as a guide for threading. For single needle lockstitch sewing machine (installed behind the presser foot screw). colour: silver Material: steel wire Size: about 4x1cm Package Contents: 36 x Sewing Finger Guard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.