Mohs Hardness Test Kit – 4 Pack, 2-9 Scratch Tester Pen, Stainless Steel Hardness Picks with Storage Box, Single and Dual Head Design, for Mineral, Gemstone, Floor

The hardness pen uses 304 Made of stainless steel, it uses a boxed storage box that can store various accessories in categories, keeping them neatly stored and easy to carry.When two minerals with different hardnesses scratch each other, they will leave scratches on the of the minerals with lower hardness.Specification:Product name: Mohs Hardness TesterMaterial: Stainless steelMeasuring range: 2-9 levelsHardness standard: 2&3 4&5 6&7 8&9Product material 304 stainless steelSize:230*185*47mmWeight: 500GProducts include:4×Hardness pen1×grindstone1×striped plate1×magnet1×Storage boxPrecaution:1. Please allow 1-3cm difference due to manual measurement and slight color variation for different display setting.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.

• 【Dual-End Hardness Design】 Each hardness pen features writing needles with different hardness levels at both ends. The Mohs hardness scale pairs are: 2&3, 4&5, 6&7, and 8&9.
• 【Stainless Steel Construction】 Made of pure stainless steel. The set includes 4 hardness pens, each measuring 155mm in length.
• 【Multi-Faceted Shape】 The hardness test pen features a multi-faceted shape designed for practical handling and extended use.
• 【Storage Box with Testing Accessories】 The storage box includes a grindstone striped plate magnet, along with aluminum plates, brass plates, and glass plates of different hardness levels for mineral identification.
• 【Wide Application】 Suitable for ceramic tile, floor, glass, mobile phone screen, mineral, concrete, and more.