FEATURE: ?Durable Cutting Tool? The glass cutter suits for 2-6/6-12/12-20mm glass cutting. ?Oil Dropper? Add some coal oil into the handle, which keep the cutting head running smoothly. ?Meet Various Need? Use a screwdriver to replace the cutting head according to different requirements. ?Wide Application? It suits for mirrors, windows, glass shelves, stained glass cutting etc. Oiling method: 1. Unscrew the metal ball at the tail 2. Squeeze the dropper to draw oil into the dropper, and add three to five drops of kerosene to the end of the glass knife. 3.Tighten the metal ball How to use glass cutting: 1. Before cutting glass, please protect your eyes and hands. 2.Please operate on a flat or desktop. Do not use glass cutting directly on windows or walls, it is better to try to practice on a piece of broken glass several times. 3.Use the engraving pen to make clear marks on the glass to be cut, and then place the glass cutter on the glass and cut along the marked position. When cutting glass, the handle and glass should maintain a 45-degree angle. When cutting a mirror, the front of the mirror must be cut. 4. Glass cutting tools cannot cut high-hardness objects, such as tempered glass, glass bricks, marble, quartz, etc. 5. Make sure that the glass cutting tool is properly filled with oil (no oil in the packaging). PACKAGE INCLUDES: Glass cutting pen* 1 Replace cutting head* 9 2-6mm*3, 6-12mm*3, 12-20mm*3 Oil dripper* 1?WIDE APPLICATION? The glass cutter tool is suitable for different glass types, ideal tool for DIY, mosaic, tiles, mirror, stained glass cutting and household cutting work. ?LARGER CUTTING RANGE? We have 3 different sizes of cutting heads in each package, 2-6mm, 6-12mm and 12-20mm (3 in each size, 9 in total). Easy to change the cutting blade for cutting different glass thickness. ?PROFESSIONAL DESIGN? Anti-skid durable alloy handle, ergonomically designed, reduces wrist fatigue. When pressure is applied, an automatic oil dispensing system keeps the wheel lubricated every time you cut, make the cutting head is more fluent and sharp. ?HIGH QUALITY MATERIAL?The metal head is made of premium steel, wear-resistant and well polished. It could be used to strike glass after cutting or put it under the glass scratch and split the glass.Date First Available: October 15, 2020. Manufacturer: Boyuyi. Item Weight: 6 ounces. Best Sellers Rank: #102,224 in Arts, Crafts & Sewing. Customer Reviews: 4.0 4.0 out of 5 stars 42 ratings 4.0 out of 5 stars. : B08L7LNLYK. Item model number: EYUS-GlassCutter-2PCS-Silver-200922. Package Dimensions: 6.5 x 4.76 x 1.02 inches.