BOUTICOL Our Knitting Machine Adapter Set includes 4 crank adapters and a 1/4" hex steel bit. They free up your hands and allow you to complete your knitting projects more efficiently without needing to crank the knitting machine! The facial ice mold is made of silicone material, which is environmentally friendly, safe, comfortable to touch, and reusable; good air tightness and no water leakage. Adapters for knitting machines fit Sentro 22, Sentro 40 and Sentro 48, Jamit and Quick Knit from Loops & Threads. The crank adapter is made of PETG plastic and the hex bit is made of strong and corrosion-resistant steel. Due to these high quality materials, our products are durable enough. Details: Color: Pink & Blue &White &Black Material: PETG plastic Size: 2.36"x2.36" PACKAGE INCLUDED: Knitting Machine Adapter*4PCS hex bit*1PCS Use Notes: One-step installation without disassembly, it can be easily placed and removed in 3 seconds, allowing you to use your crochet machine with ease. Standard 1/4" steel hex bit fits securely in any screw gun, standard electric/electric screwdriver. Since the knitting machines suitable for our products are mainly operated manually, it is recommended to use a medium-speed power adapter with a rotation speed not exceeding 180 rpm to avoid damage to the adapter. Notes: Please allow chromatic aberration due to different lights and screens. Manual measurement, please allow slight errors on size.