Product Description Material: plastic, stainless steel Size: product thickness 1.2cm length 17.8cm, engraving version: 30x22cm Product diameter: 80mm (inner diameter) 103mm (outer diameter) Color: Ink red, black, blue Quantity: 1pcs Package content: 1*dark blue pen + engraving version 1.360 Rotating Blade: If you have trouble in rotational aspect of blade in a sort of slalom shape down the paper, the stainless steel 360 craft cutting tool is a great alternative. This craft cutting tools 360 has a hardened rotating blade craft knife and relies on two miniature ball bearings to ensure free movement of the pen blades. 2.Ergonomic Handle For Right-Handed Use Or Left-Handed Use: The ergonomic handle designed in L-shape which can increase torque for labor saving, It will protect your wrist during long time cutting work. The L-shape will aslo allow you have better vision on your cutting lines. 3.Complete Set: Came with drafting triangle protractor ruler set and 3 cutting craft tool 360-degree rotating blade The craft tools blade is extremely sharp after being punched by the machine, so you don't have to spend too much effort when using it and won't damage the edge of your plastic ruler when cutting in both directions. As well as a drawing triangle ruler Protractor which can keep you cut out nice clean curve straight every time. 4.Wide Range Of Use: The revolving blade craft cutter tool is designed for cutting mutiple thin-sheet materials like paper, vinyl, cards. It's ideal cutting tool for craft works including stencil making, paper-craft, scrapbooking, card-making, decoupage, planner stickers, artwork, graphic design,architecture, sign writing etc. 5.Beyond Imagination: This rotating cutting tool take your imagination beyond limits, it helps you to become creative, make any handcraft design more precision and like a pro. Note: Take a pair of pliers grip the hobby knife blades firmly and pull rotary cutting blades out to replace the new craft knife blades simply push the hobby blade in place.