Neodymium Ring Magnet - (OD)35mm x (ID)6.15mm x (H)10mm they are a single sided

they are a single sided magnet

This male threaded magnet has a pull force of 113kg and a weight of 254 grams

Important: this magnetic lifter is rated at 300kg against a minimum of 20mm steel

and transportation or engineering workshops

is a scope of another magnitude

Neodymium Ring Magnet - (OD)35mm x (ID)6.15mm x (H)10mm they are a single sidedMagnetic Product Description: This rare earth ring magnet has an outside diameter of 35mm, an inside diameter of 6. 15mm and a thickness of 10mm. It is identified by the AMF magnet part number 23003. Uses for our Rare Earth Ring Magnets: Rare Earth Ring magnets can be attached to shafts or axles and used to initiate or restrict movement of magnetic material in manufacturing processes or in the devices that monitor and protect those systems. Varying