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The vertical support unit for Hapstone's M3 and V8 series grinders is an effective low-cost option t..
Convex Adapter is a tool for sharpening knives with the convex edge using Hapstone modular..
The Linear Ball-Bearing Pivot Unit is an optional upgrade for the first revision of Hapstone M2..
Fine-Tuning Adapter is a simple tool for maintaining the chosen sharpening angle while working ..
Spring-Assisted Stopper Ring to limit the movement of the horizontal shaft in the pivot unit. T..
The Convex Guide Rod is a tool for sharpening knives with the convex edge using Hapstone knife ..