this stone does not require soaking before use but will absorb water over time

WD-40 (for experienced users only)

Suehiro W8 8000 sharpening stones are used for finish sharpening knives on Hapstone and Edge Pro knife sharpeners

It is advisable to use silicon carbide stones for sharpening knives made of hard stainless steel or carbon steel

There is no difference

lbb pivot hapstone m2 this stone does not requireThe Linear Ball Bearing Pivot Unit is an optional upgrade for the first revision of Hapstone M2 utilizing PTFE insert. The linear ball bearing provides extra smooth shaft movement and requires no lubrication or cleaning. One of the best selling points of flagship Hapstone R1 comes to Hapstone M2. The second revision of Hapstone M2 implements the linear ball bearing pivot unit. Owners of Revision 1 can purchase the linear ball bearing pivot unit