SUZLAZYR 5 Pack Mohs Hardness Test Kit, Mohs Hardness Picks 5-9 Level Scratch Tester Hardness Test Pen, Rock & Mineral Test Kit

Features

• Model: 5#–9# Mohs hardness pens
• Material: pen point (5 # Apatite; 6 # Orthoclase; 7 # Quartz; 8 # Topaz; 9 # Corundum)
• There are 5 pcs of hardness pen in the box, each of them is 100x6mm long and weigh of 7.8g
• Aluminum alloy gift box is small and convenient to carry to protect each hardness pen
• This hardness test pen is applicable for gemstone, ceramic tile, floor, glass, mobile phone screen, mineral, concrete, etc.