Neodymium Ring Magnet - (OD)19mm x (ID)6mm x (H)10mm From helping out the rotary

From helping out the rotary blast hole drill bits readying another section of rock for dynamiting

It has a countersunk hole for easy attachment and a mild-steel nickel coated cover that protects it from chipping or cracking from repeated use

Scrap metal

when the desired fluid level is attained

Neodymium Ring Magnet - (OD)19mm x (ID)6mm x (H)10mm From helping out the rotaryMagnetic Product Description: This rare earth ring magnet has an outside diameter of 19mm, an inside diameter of 6mm and a height or thickness of 10mm. It is identified by the AMF magnet part number 23006. Uses for our Rare Earth Ring Magnets: Neodymium Rings can be considered as Disc magnets with a hole. Although the missing material from the void reduces their magnetic strength, this area also facilitates simple fixing methods such as cable ties or