High quality material: Made of high-quality plastic, it has good weather resistance, high temperature resistance, and is not easy to break. Suitable for Sentro 22 40 48 knitting machine, replace knitting machine crochet hook, no need to worry about your knitting machine being unusable due to parts Tensioner compatibility: These knitting machine tensioners are compatible with for Sentro 22, for Sentro 32, for Sentro 40, and for Sentro 48 knitting machines, making them easy and fast to use. Colour:As Shown Material:plastic Package Contents: 10 Pcs x for Sentro Knitting Machine Replacement Needles 2 Pcs x Knitting Machine Tensioners 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.